Piston Slap: Crossing Over Into Minivan Tow Ratings?

Mike writes:

Dear Sajeev,

I have been a fan of TTAC for a while now. I am motivated to write by the recent responses to towing with a 2005 Odyssey. Two years ago I bought a 2008 Toyota Sienna and a 21 foot (actual total length) travel trailer. The trailer has a GVWR of 3500 lb, which the Sienna is rated to tow with its towing package. I had an independent shop install a fluid-to-air ATF cooler, unfortunately, perhaps, choosing the smallest model as it was recommended for a 3500 lb tow. I was concerned about getting too much cooling in the winter. The van already had an ATF cooler in the radiator. I had them put in an ATF temperature gauge (before the radiator) at the same time. The towed weight of the trailer is several hundred pounds below the GVWR, but it has a front profile that is basically vertical. I have towed the trailer about 20,000 km (yes, I’m in Canada) and done what Toyota calls an ATF change three times. That’s actually a drain the pan and refill with 4 L of ATF, not really a change. Of course, I have no way of knowing how accurate the gauge is, but the highest it’s been on the highway is 220 F on a couple of grades in the BC mountains (Coquihalla highway). The temperature went down as soon as the grade did. It went up to 240 F or so for a few minutes while backing up a steep hill and around a bit of a corner into a storage yard. The van had 38,000 km on it when purchased and is now at 82,000 km.

Enough background. I am writing to ask why it is apparently okay to tow a larger trailer (5000 lb rating) with a Highlander but not a 3500 lb trailer with a Sienna. As far as I can tell, the engine, transmission and weight of the vehicles are basically the same. The internet is rife with posters who advise against towing with a minivan but seem to have no qualms about doing so with a SUV, except the very smallest.

What do you think?

Thanks very much for helping me out with this. I can find no answer to my question on the internet.

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Review: 2013 Mazda CX-5 Grand Touring – Off The Beaten Racetrack

LAGUNA SECA – It’s called the Corkscrew, and for good reason. Perhaps the single most famous piece of racetrack topography in North America, this left-right two-punch combo can unsettle an unsorted chassis just as fast as the steep 18% gradient can unsettle a novice driver’s stomach. Jack Baruth was here in the same car. I’ll try not to embarrass, nor soil myself.

As I enter the throwaway left-hander, I’m mentally muttering under my breath, “Aim for the third tree, the third tree.” Bris-ing the apex of Turn 8, it’s blue sky time, and I’m hard on the throttle, fully committed. Perfect. Both right wheels just kiss the curb with a faint rumble, and it’s through the right-hand sweeper fast and- wait. Too fast.

Rookie move: lift.

It happens fast. Off track. Rotating left. Into the dirt. Sliding. The tire wall rushing closer. I have time for just one thought…

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2013 Honda Crosstour Concept To Debut At New York Auto Show
Honda will show off a concept version of their next generation Crosstour, and since we all know that “concept” is just “thinly disguised pr…
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Ford Launches Reality TV Show To Promote Escape

Ford is launching a reality TV show dubbed *groan* Escape Routes, which will run for 6 weeks on NBC’s 8 P.M. Saturday night slot and on mun2 (a Hispanic network) at 11 P.M, starting on March 31st. Participants will ostensibly drive around in the 2013 Escape as overly dramatic music and poorly scripted lines spew forth. As if the concept weren’t nauseating enough, participants on the show will apparently interact with fans of the show online to “tap into the fabric of the local culture”.

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Buick Encore 75 Percent Revealed Thanks To Infuriating Internet Publicity Campaign

It wasn’t our intention to inundate you with Buick stories, but sometimes the improbable occurs. Buick has been slowly revealing their new Encore crossover via their Facebook page, and we’ve now been treated to 3 out of 4 photos – enough to discern what the vehicle really looks like ( pretty close to what Ed’s photo revealed).

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New or Used: Being a Parent…to Your Parent

TTAC Commentator Jimal writes:

Sajeev and Steve,

I have one of those quandaries that most adults will go through sooner or later in life and I figured I would tap into you and the B&B for suggestions. My father passed away recently after a long illness and I’m helping my mother with settling his estate; cleaning up finances, etc. Among the things my father left behind were his 2005 Buick LeSabre, which my mother hates, and her cherished 1996 4-door Chevy Blazer.

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Volkswagen Crosses Its Tiguan
If there’s a word to describe VW’s future plans in the US, it’s “big.” There is still no specific plan to bring subcompact Polo…
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Review: 2012 BMW X5M

If you ask a certain segment of the automotive press, it seems that BMW is rapidly losing the plot. While I agree that BMW’s latest wares are bigger, heavier and more leather-clad than ever before, I can’t say thing is a bad thing in my mind. I upset a few people when I reviewed the then-new 335is by saying “BMW is the new Mercedes”. I’m not sure why noses were “rankled”, but there seems to be a large segment of TTAC’s readership that believe BMW has abandoned “sport” for “luxury”. Maybe they are right; the M3 and M5 have been gaining weight an alarming pace and now we have the X5M and X6M, a pair of 5,400lb SUVs wearing full-on M badges. The burning question at TTAC is: should the guy responsible for designing it be committed? Or should the vehicle be put in a straight-jacket for being a totally insane machine?

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Infiniti JX: Three Rows, But Only Six Cylinders
When Infiniti said they were coming out with a new 7-passenger crossover, I, like the rest of the world, was expecting a stretched FX CUV with a V8 option, R…
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What's Wrong With This Picture: 2013 Flex Hits The Funkmaster Edition
Thought the Flex’s 2013 update would be a subtle tweak? Thought Ford might even tone down its freakiest minivan alternative? Think again, fool. Beaten…
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Are You Ready For: The Return Of The Allroad?
Though the original A6-based Audi Allroad was designed for the US market, it hit the market at the height of SUV mania, and as a result never sold more than…
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New or Used: Respect The Van

David writes:

Hi Sajeev,

My family of 5 (1 spouse, 2 four year olds, 1 2 year old) shares 3 cars. A 2003 Passat Wagon, purchased used with 30,000 miles is our primary family car. It gets good mileage (33 mpg on the highway!), fits three kids seats across the back row, and carries a ton of luggage (more than many SUV’s). It handles reasonably well and has good driving dynamics and comfort (and a tight turning radius). Our second car is a 1996 Honda Civic two door hatch, which gets great mileage, was purchased with 8000 miles on it, and was recently declared a rolling hazard with the head gasket ready to fail at any moment. It gets driven 10-15 miles a week at speeds below 35 mph. Our third vehicle serves the dual purpose of track/date car, a 1995 BMW M3 Lightweight, purchased with 60,000 miles on the clock. These three cars have been more than adequate for our family’s needs for 5 years. Until now. We need something that carries 7.

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New or Used: Whither Station Wagon?

Could be worse!

Mike writes:

Sajeev and Steve,

This is not a pressing question (yet) but it is a frequent and ongoing conversation with my wife and several of our friends. We are expecting our first child in one month. One. Month. We are as ready as ready can be, but recognize that our wheels might be an issue before long.

My wife has a 2002 Camry 2.4L with about 140k miles. No real problems, although the valvetrain was rebuilt about 30k miles ago due to what Toyota emphatically claimed was not sludging. It is also going to need new struts soon… Austin streets are just brutal. It still gets about 32 MPG on the highway, which is our baseline requirement for fuel economy (the wife commutes about 60 miles round trip). It’s also paid for. Our rear-facing child seat fits in the back no problem, leaving legroom for both driver and front passenger (those things are unbelievably massive). Hypothetically, once we load up the dog, luggage, and all the baby accoutrement (and what if we have another?), it’s pretty cramped at best. Problem.

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Chart Of The Day: Compact CUVs In September And YTD
Though the Compact CUV segment continues to add volume, its starting to become one of the older segments, as models like Escape, Rogue, CR-V and RAV4 approac…
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Review: 2011 BMW X3 XDrive35i

Despite what Frank Greve might tell you, some automotive journalists (well, automotive writers anyway. Car writers. Hacks.) don’t have gleaming new cars dropped off curbside, with caviar and champagne in the cupholders and an eight-ball of coke in the glovebox. Instead, a jobbing freelancer such as myself usually has to hoof it on the ol’ public transit network to wherever the fleet cars are kept, staring out the window at people picking their noses in Toyota Corollas and pretending not to notice the pressure on my thigh as the portly, odiferous gentleman on my left overflows his seat.

This time though, BMW being so far out of the way, I grabbed a lift from a friend in a track-prepped, bright orange Lotus Elise. I have never indulged in methamphetamines, but now I no longer need to: never mind road feel, that car was effectively fifteen miles of licking the tarmacadam.

After such a Habanero sorbet, the drive back in the BMW was fairly muted. Ho-hum, another big heavy heffalump with a fancy badge on the nose and an options pricing list that reads like the GDP of Belgium. Right? Next morning at the on-ramp: um, actually no. This thing’s a rocket.

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