The Truth About Cars » consumption http://www.thetruthaboutcars.com The Truth About Cars is dedicated to providing candid, unbiased automobile reviews and the latest in auto industry news. Sun, 07 Dec 2014 13:37:29 +0000 en-US hourly 1 http://wordpress.org/?v=4.0.1 The Truth About Cars is dedicated to providing candid, unbiased automobile reviews and the latest in auto industry news. The Truth About Cars no The Truth About Cars editors@ttac.com editors@ttac.com (The Truth About Cars) 2006-2009 The Truth About Cars The Truth About Cars is dedicated to providing candid, unbiased automobile reviews and the latest in auto industry news. The Truth About Cars » consumption http://www.thetruthaboutcars.com/wp-content/themes/ttac-theme/images/logo.gif http://www.thetruthaboutcars.com Piston Slap: Less Slap, More (oil) Control http://www.thetruthaboutcars.com/2014/08/piston-slap-less-slap-oil-control/ http://www.thetruthaboutcars.com/2014/08/piston-slap-less-slap-oil-control/#comments Tue, 26 Aug 2014 12:57:41 +0000 http://www.thetruthaboutcars.com/?p=898410 Pete writes: Hey Sajeev, I got one for you. Several engines nowadays are set up to operate on half their cylinders under light-load conditions. Would the design considerations for piston rings vary from those normally used for such cylinders that are only used part-time? The question arises in the context of a 2009 V6 Accord […]

The post Piston Slap: Less Slap, More (oil) Control appeared first on The Truth About Cars.

]]>
(photo courtesy: autozone.com)

(photo courtesy: autozone.com)

Pete writes:

Hey Sajeev, I got one for you.

Several engines nowadays are set up to operate on half their cylinders under light-load conditions. Would the design considerations for piston rings vary from those normally used for such cylinders that are only used part-time? The question arises in the context of a 2009 V6 Accord that is currently in the Honda dealer’s shop to have the piston rings replaced at the manufacturer’s expense to cure a continual oil consumption and spark plug fouling problem.

Sajeev answers:

We learned from a previous Piston Slap that General Motors answered your query:  the displacement-on-demand (DoD) 5.3L truck motor (and its sister, LS4-FTW?) needs new and redesigned piston rings to cut oil consumption in the four deactivated cylinders. The motors still (supposedly) performs as intended with strong compression from the compression rings, oil burning is only a shameful side effect. Not to make a molehill out of a mountain, but that’s it.

Or perhaps turn off DoD with a computer re-flash, since there’s no free lunch in this business: if you want fuel economy, buy a lighter, trimmer and smaller engined vehicle. But I digress…

Honda, operating under the same Laws of Physics (Thermodynamics?) has the same DoD problem. In theory, the design of the “oil control” piston rings is crucial: more info is in this insanely detailed article. Definitely great bedtime reading for the Pistonhead.

Honda’s Class Action lawsuit doesn’t seem to hurt Odyssey or Accord resale values, so dump it if you wish. Or regularly check your oil level and spark plug condition, doing so lets affected V6 Honda products live a long and happy-ish life. Heck, this much oil consumption (1-3 quarts per high mileage oil change) was once the norm (during old school 3000 mi intervals) and that’s without DoD’s inherent fuel savings.

But that fact remains: save fuel or save oil? Pick one, son.

 

Send your queries to sajeev@thetruthaboutcars.com. Spare no details and ask for a speedy resolution if you’re in a hurry…but be realistic, and use your make/model specific forums instead of TTAC for more timely advice.

The post Piston Slap: Less Slap, More (oil) Control appeared first on The Truth About Cars.

]]>
http://www.thetruthaboutcars.com/2014/08/piston-slap-less-slap-oil-control/feed/ 34
Piston Slap: Do New Cars Burn Oil? http://www.thetruthaboutcars.com/2013/04/piston-slap-do-new-cars-burn-oil/ http://www.thetruthaboutcars.com/2013/04/piston-slap-do-new-cars-burn-oil/#comments Wed, 24 Apr 2013 11:00:11 +0000 http://www.thetruthaboutcars.com/?p=485806 Jim writes: Dear Sajeev: I hope you are well. I have a 2011 Subaru Forester (silver/5 speed) which has been great since purchase. I have travelled 19K to date and change oil every 6 months or 7,500 miles. I have one somewhat troubling matter, however: I’ve added a quart of synthetic oil prior to each […]

The post Piston Slap: Do New Cars Burn Oil? appeared first on The Truth About Cars.

]]>
Jim writes:

Dear Sajeev:

I hope you are well. I have a 2011 Subaru Forester (silver/5 speed) which has been great since purchase. I have travelled 19K to date and change oil every 6 months or 7,500 miles. I have one somewhat troubling matter, however: I’ve added a quart of synthetic oil prior to each 6 month/7,500 mile oil change.

Is this to be expected? My friendly local Subaru dealer says that “all cars” will use oil over a 6 month period. I’ve stopped in every 1200 miles the past 6 months and verified that it is using some oil.

However, my silver 1990 535i 5 speed with 250K did not use any oil when I drove it daily for many years. It is now in retirement. The local bmw guys tell me that the m30 engine was the best ever built by the Munich folks.

I keep my cars for a long time and would prefer to address this now, prior to the warranty expiration date.

Thanks and best wishes,

Sajeev answers:

Supposedly many (all?) late model vehicles come with a caveat about oil consumption in their owner’s manuals.  Just for fun, I looked at my only late model vehicle’s owner’s manual and the 2011 Ford Ranger (modern Duratec or ancient Cologne V6) doesn’t have a penchant for oil consumption. So anyway…

We’ve discussed Subaru’s oil concerns several times before in this series, but I doubt they have relevance here.  So I’m not surprised to read your problem. Do I know any details off hand? Nope. Luckily, we have Google searches and the NASIOC. Do more searches there and you’ll see my point.

Odds are your dealer isn’t lying: the Subaru Boxer engine (especially the turbocharged ones) can burn oil, so be okay with it.  Kinda like Mazda RX-8 owners! Ditto the V-10 powered BMW M5 and M6. These whips prove that certain engines are designed for performance, consequences be damned.

Unhappy with my answer? Sell the Subie and buy a normal car with owners that’d call for blood if their machines started sucking down oil…and they’d get that blood, too. To wit, a quote from an interesting article I Googled:

“Do cars today consume more oil than in the past? Not according to John Ryder, a master automotive technician and Philadelphia-area manager for AAA Mid-Atlantic’s Approved Auto Repair Network.

Ryder agrees that manufacturers now commonly insist it’s normal for a vehicle to use up to a quart of oil per 1,000 miles. But in real-world experience, he says, such consumption is rare. “You see it in a super small percentage of cars,” Ryder says.”

 

 

Send your queries to sajeev@thetruthaboutcars.com. Spare no details and ask for a speedy resolution if you’re in a hurry…but be realistic, and use your make/model specific forums instead of TTAC for more timely advice.

The post Piston Slap: Do New Cars Burn Oil? appeared first on The Truth About Cars.

]]>
http://www.thetruthaboutcars.com/2013/04/piston-slap-do-new-cars-burn-oil/feed/ 106
Avoidable Contact: the watery Big Bang, the 32-step power steering fluid check, disposable faux-ury. http://www.thetruthaboutcars.com/2012/10/avoidable-contact-the-watery-big-bang-the-32-step-power-steering-fluid-check-disposable-faux-ury/ http://www.thetruthaboutcars.com/2012/10/avoidable-contact-the-watery-big-bang-the-32-step-power-steering-fluid-check-disposable-faux-ury/#comments Mon, 01 Oct 2012 13:00:40 +0000 http://www.thetruthaboutcars.com/?p=462269 In a former life as an occasional participant on the fringes of the ol’ illegal street racing, I was a member of an “underground message board” where matches were set up, smack was talked, grammar was tortured, you know the deal, right? The board was well-known for being completely cop/narc-free, largely because the cops didn’t […]

The post Avoidable Contact: the watery Big Bang, the 32-step power steering fluid check, disposable faux-ury. appeared first on The Truth About Cars.

]]>

In a former life as an occasional participant on the fringes of the ol’ illegal street racing, I was a member of an “underground message board” where matches were set up, smack was talked, grammar was tortured, you know the deal, right? The board was well-known for being completely cop/narc-free, largely because the cops didn’t care about two community-college dropouts racing 15-second Hondas behind a grocery store in the sticks at two in the morning and then creating twenty-eight-page forum threads detailing their particular excuses for losing. In fact, until some GTO-driving halfwit managed to kill himself and cripple an innocent woman traveling the other way on the freeway, it was pretty much open season for 40-rolls on the freeways of Columbus, Ohio.

But I digress, so we shall return to the topic at hand. There was a fellow vaguely known as “Concrete Sam” on the boards, some mouth-breathing driveway-pourer who had managed to funnel his entire career’s earnings into a tuned-up C5 Corvette. His “signature” on the boards was “THE VETTE GETS THEM WET — Call me for all your concrete and masonary (sic) needs”. Crass, but honest. You know what you’re getting with Concrete Sam. He has a Vette. It is popular with his chosen genre of female. Also, he is available to do actual work for actual cash, which he probably will plow into his Corvette, enabling him to win more street races, drop more panties, and ever it shall be thus. Concrete Sam is the real deal.

Imagine a spectrum of self-delusion and pretension, if you will. Concrete Sam, tirelessly filling sidewalks by day and chirpin’ in third on the mean streets by night, is on one side of that spectrum. On the other side? Why, it’s the Hublot Big Bang.

 

As the Reagan era came to a close and the last vestiges of disco died screaming under the relentless, atonal attack of Kurt Cobain’s Fender Jag-Stang, America’s men came to a sudden, almost universal realization: it was no longer okay for men to wear jewelry. Of any kind. Almost overnight, gold rings and sterling-silver necklaces disappeared from the public attire of the middle and upper-middle classes. Perhaps it was the always-present “preppie” influence given additional teeth by post-Carter prosperity. I really couldn’t tell you, but it happened with the kind of speed normally reserved for a change in preferred tie width. It also appears to have been a remarkably durable change; even today, only our urban disaffected wear gold chains. Even such harmless staples as the high-school class ring went from mandatory to horrifying tout suite.

Still, there was one piece of jewelry a man could wear: his watch. This made watches “hot” all of a sudden. The default watch on which one could visibly spend money was the Rolex, so everybody bought a Rolex. But once everybody had a Rolex, wearing a Rolex meant nothing. The “Holy Trinity” of watchmakers — Vacheron Constantin, Patek Philippe, and Audermars Piguet — boosted their prices into the stratosphere to ward off the proles, scarcely understanding that only the (ex-)proles had that kind of money anymore anyway. The demand for new and unique luxury watches far exceeded their supply. What happened next was an odd sort of pre-Cambrian watch explosion as old factories were reopened, meaningless old names were dusted off, and heritages were invented with the sort of free-wheeling fictional license typically reserved for a salesman’s resume. Ulysse Nardin, Bovet, Panerai: out of the Swiss graves and onto the wrists of the oligarchs!

One of the more offensive designs of the Luxury Watchpocalypse was the Hublot “Big Bang”. The recipe for a Big Bang is simple: take the same movement one finds in a $500 Hamilton Jazzmaster watch, put it in a case which is a grotesque, oversized knock-off of Gerald Genta’s designs (full disclosure: your humble author owns a titanium Ingenieur, designed by Mr. Genta), then add a ten-dollar rubber strap to pay homage to Hublot’s “heritage” as a twenty-year-old maker of rubber-strap watches. The resulting watch is “worth” ten thousand dollars or more and is worn by such persons as Bernie Ecclestone (who did an advertisement after he was beaten and robbed of his Big Bang by some watch-ignorant thug who probably overlooked a JLC Master Compressor on the wrist of the guy next to Bernie) and Diego Maradona.

The Big Bang is the perfect “luxury watch”. Its worth consists solely of its price. It is cheap to make and contains cheap parts. Its manufacturer doesn’t even bother to fabricate a “heritage” the way the brand-disinternment crowd does. The only reason to wear a Big Bang is to advertise that one can afford to wear one. Plain and simple. They aren’t even well-made within the confines of their modest technical brief; at a very rainy Petit LeMans a few years ago, a good friend of mine endured the agony of watching his Big Bang Carbon’s face cloud up with internal condensation from an improperly-sealed case. Fifteen grand for a watch you can’t wear in the rain! Luckily it never rains in the Moscow EDM clubs or at David Guetta’s Ibiza DJ-in-residence gigs, or the Hublot would be entirely worthless. Hublot’s razor-sharp sense that a Big Bang is only valuable because of its sticker price finds its most sublime expression in the “Big Bang $3m”, a Big Bang which was loaded with enough diamonds and other junk to not-really-justify a price of three million dollars. Apparently someone was willing to buy it, which caused Hublot to release the “Big Bang $5m” this past year in search of the proverbial bigger fool.

Not everyone is so readily fooled, however, so Hublot and other watchmakers are busy CAD-creating their own “manufacture movements” to replace the generic ETA/Sellita/Valjoux movements found in their products. In this, the Cretaceous period of watch enthusiasm, the ability to engineer and manufacture one’s own mechanical watch movement is essential for “credibility”. Not that the genuine prestige watchmakers all used their own movements anyways, but there’s a certain amount of Cadillac-at-the-Nurburgring idiocy going on: Rolex makes their own movements, and they are a respected brand, so we need to have our own movements as well, even more complicated and feature-packed, and then we will be more respected than Rolex.

There’s just one little problem with that strategy. The proliferation of quick-bake “manufacture” movements is creating an entire generation of hugely expensive, amazingly complicated, completely “bespoke” watches which will be impossible to fix. Most watch repairmen can fix the ETA 2892 movement found in affordable Swiss watches, and most watch repairmen can fix a Rolex because they are numerous and well-documented, but can anybody fix a Grand Complication Tourbillon watch from some company which was in business for three years, selling watches at $150,000 a pop to Chinese entrepreneurs, before going bankrupt and disappearing?

Of course not. These watches, which can’t match a eleven-dollar Taliban graduation watch for accuracy, are also imperfectly ticking down the seconds to their own deaths. That’s good! They are even more perfect as luxury items than the original Hublot Big Bangs, because they are ephemeral. There’s something unpleasantly Protestant about a Rolex, you see. One might wear it for a lifetime, or buy it used, or simply purchase it affordably on the used market and enjoy it for a long time. It isn’t a perfect statement of immediate, current, present wealth. A Rolex or Omega might cost as much as a Ulysse Nardin, but how can one be sure that one just bought it for a large sum of cash on the barrelhead? It might be old, or refurbished! It isn’t a true luxury good unless it expires, the same way a trip to Spain expires, the same way a week in a five-star hotel expires. Only then is it completely unnecessary, totally flashy, utterly ephemeral.

My Porsche 993 is like my Omega Speedmaster Broad Arrow. I bought them both lightly used for a fair price. I’ve maintained them, had them refurbished when necessary, kept them up to spec. They both appear reasonably new, even though they are not. I expect to give — or leave — them both to my son, who will take the uncomplicated ignition key of the Porsche and the polished wooden box of the Omega some time around his eighteen birthday, I expect. Neither is a simple machine, but they are well-understood and can be fixed correctly when required. Neither is a marker of wealth in 2012, and they will be even less so in fifteen years. There’s a simple, mechanical, tangible pleasure in touching and using them both. They exist as worthwhile objects in their own right, farther and farther away from sociological meaning as the years pass. They’ve also both stopped depreciating.

My Boxster S, on the other hand — well, the other day, I heard it groaning. Oh, how it moaned as I drove around the Wendy’s parking lot. Off to the internet to find out that the Boxster is known for eating power steering pumps. It also requires that the fluid be frequently topped-off. I confess that after just 42,000 miles on the car I hadn’t considered its power-steering needs. The power steering pump is $375. Quite a bit of money for something that can’t last 42,000 miles. If a Hyundai Accent had a power-steering pump failure at 42,000 miles I’d call it an unreliable piece of shit. Still. I’d better fill the reservoir and see if that helps.

I’ve detailed the steps below to check the power steering fluid on a 2004 Boxster S. I want you to read them, and consider what Porsche’s own opinion was of the Boxster’s likely durability when they designed the car. Is this a car which will persist for thirty years?

  • Unlatch the top and open it to the approximate half position. At this point, the metal cover for the top will be cantilevered away from the body and the fabric top will be half-folded.
    Reach into the car and find the snap-ball connector which keeps the top attached to the body. This piece feels flimsier than a Suntour derailleur clamp. Pop it off.
  • Go to the other side of the car and do the same thing.
  • There is a plastic/vinyl sheet which is held taut by the top mechanism on one side and two cheap looking plastic clips on the other. Unlatch the plastic clip closest to you. DO NOT BREAK IT. If you do, your top won’t work any more.
  • Go the other side and do the same thing.
  • On the passenger side of the car, push the now-freed glass rear window up and reach down until you find an electrical connector, similar to a computer hard-drive connector. Squeeze it to unlatch it.
  • There is one plastic rotary latch on each side of the top of the carpeted subwoofer. Yes, you have to remove the subwoofer to check the power steering fluid. Unlatch your side.
  • And the other.
  • Lift the subwoofer assembly out of the car. Don’t scratch your $3,600 GT Silver paintjob. Put it somewhere on the ground.
  • There are four more rotary latches to undo on the carpeted panel beneath the subwoofer. Unlatch the ones on your side.
  • And the other side.
  • Lift this flexible carpeted panel out of the car. It’s nice to have help to do this, by the way.
  • Now you’re confronted by a plastic/metal panel sealing the engine compartment. This, at least, has metal fasteners. Unlatch the fasteners on your side.
  • And the other side.
  • Lift this panel, which weighs about 25 pounds, off the top of the car without scratching or damaging anything. Put it somewhere. Again, nice to have help at this stage.
  • The power steering fluid filler and dipstick is at the very edge of the engine comparment. Unscrew and check.
  • Perform all the steps in reverse to reassemble. Be exceptionally careful about the snap-ball connectors. They have a limited lifespan.

Thirty-two steps. To check the power steering fluid. In a car that is well-known to require checking of that fluid on a frequent basis. If you actually need to replace the power steering pump, prepare to enter a new and exciting area of Hell itself. You’ll be lucky if that’s all you have to do. Boxsters are notorious for melting the very lines which carry the fluid to the rack. The lines are more expensive than the pump and require massive disassembly to replace.

My power steering reservoir is empty. My Porsche dealership no longer carries the appropriate fluid, since this 2004 Boxster is a very old car by the standards of people who only expect their watches to last a few years. The nearest shop to have it is on the other side of the city. I’ll refill the reservoir tomorrow and see what happens. It might fix it. It might be just the first stop on a multi-thousand-dollar adventure, on a car which is still depreciating at considerable speed and which, I remind you, has under three years’ worth of use on it by commuter-Hyundai-Accent standards.

I’ve been reading the Paris Auto Show coverage. Most of it was written by people who were flown to Paris by a manufacturer or an exceptionally generous media conglomerate. These people will never own a Porsche. They certainly won’t ever have to take personal responsibility for diagnosing and fixing one. They swallow the sewage-like PR poured down their throats about how wonderfully “upscale” and “luxurious” and “desirable” the Panamera and the 991 and the others are. They don’t ever stop to consider what it means when a company requires thirty-two steps to perform a basic fluid check. Many of them don’t even own cars. Very few of them could fix a car themselves or even perform an oil change.

Modern Porsches, just like the Hublot Big Bangs and their ilk, are ephemeral. Fleeting. Fake. Faux. Luxury. Junk. The pleasure of purchase is all you get. After that it’s a full-tilt rush to buy the next thing. Their Eloi owners won’t think about the Morlocks who own, maintain, race, and enjoy old Porsches. We don’t exist to them. They are simply chasing the next brightest thing. An unfixable watch, worn to a meaningless meeting and left in a disposable “luxury” car. We know it’s luxury because they tell us so, with every press release, with every five-star hotel used for the first drive, with every Chinese-sewn-junk branded polo shirt left on the hotel bed.

The old Porsches, the old Mercedes-Benzes, they had some integrity, some value for the Morlocks, for the third owners, for the hobbyists. They endured. They were like old Rolexes; expensive to run but durable by design. That’s no longer desired, if it ever was. Today’s “luxury” car is just like today’s “luxury” watch. The value of the thing is the price, the presence, the heavy flame-surfaced tank-like offensiveness of an X6 imposing your prosperity on your neighbor’s fragile psyche like a heavy gold chain worn around one’s neck a thousand years ago.

It won’t last. It cannot last. It is a house built on sand. I want to believe that the tide will turn, that we may value vehicles once again for their integrity, their construction, their durability, their real-world performance. The day may come when the Panamera’s successor meets the same icy disdain among the upper-middle-class as the downsized Fleetwood did in 1985. The purveyors of instant junk may push too far, too hard, dare too much, fly too high, crash too hard. The ultimate status symbol may become an old 560SEL, that million-mile aerosedan from another era. It may become the 993, that perfected expression of the air-cooled ethic. It might be an E34 BMW M5, the last six-cylinder gasp of the true M-car. Aw, hell. It could be a C6, for all I know. Concrete Sam could wake up and find that, against all odds, the Vette now gets them all wet.

The post Avoidable Contact: the watery Big Bang, the 32-step power steering fluid check, disposable faux-ury. appeared first on The Truth About Cars.

]]>
http://www.thetruthaboutcars.com/2012/10/avoidable-contact-the-watery-big-bang-the-32-step-power-steering-fluid-check-disposable-faux-ury/feed/ 143