Piston Slap: Parked in the Polar Vortex?
V writes:Here are two questions from a regular, and grateful, Piston Slap reader:
  1. How long is best to idle a gasoline engine after starting & before driving off: [A] a few minutes? one minute? [C] until the revs settle down? no need, just drive right off? Assume ambient temperature well above freezing; a shifting style on the sedate side; and a car made in the past 15 years so engine has EFI and EGR and all that. Current ride’s engine is naturally-aspirated and direct-injected, but I sure would appreciate knowing the proper protocol for other combinations too, if different. Several sources over the past years have all agreed on for modern engines, but then just a few months back a Car & Driver column said [A], so now I’m unsure again.
  2. Leaving a car (stick shift *of course*) parked: best in gear, best in neutral, or doesn’t matter? Assume the parking space is either not sloped at all, or is sloped and I know enough to turn a front wheel into the curb toward the down slope.
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Piston Slap: Improper Engine Warm Up Procedure?

TTAC Commentator Arthur Dailey writes:

Sajeev,

Thanks very much for posting my question. Your answer and the comments from others were most informative. How about another?

We now have only 2 licensed drivers in our home. We do however have 3 licensed cars in the driveway. Please do not ask about the project car in the garage. 2 of the cars are our ‘daily’ drives, the 3rd is used primarily on weekends. We live less than 3 minutes from a 400 series highway in Ontario. That means that the cars can be required to reach highway speed before they are ‘warmed up’.

My normal practice last winter was to get up, start all the cars, turn off all possible drains on the batteries. Then take the dog to the park across the street, stretch our legs and let him do his business. After about 10 minutes we return. I then turn on the heater/defrost on the 2 cars that we will be driving and scrape/brush them. When this is completed, I turn all 3 cars off and go back into the house to get myself ready for work. You may all remember what last winter was like and the upcoming winter is supposed to be similar.

Now I understand that idling is environmentally irresponsible. And possibly against by-laws in some areas. That however is a discussion for another forum.

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Piston Slap: A Frozen Expedition South of the Yukon's Tundra?

Frozen in KC writes:

Long-time reader, first-time questioner with a 2005 Ford Expedition Eddie Bauer 4×4 question: My local Ford dealer says there is no block heater available to install on my Expedition. As you may know, it has been extremely cold in the midwest lately and my Ford is in the driveway. I have an outlet nearby and would love to be able to start up an already-warmed engine in these bitter cold mornings, not just for my comfort, but for the longevity of the engine. I’m pretty handy, but not an advanced mechanic.

Can the Best-And-Brightest possibly be of assistance? Thanks!

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Piston Slap: Fabric Tops Vs Polar Vortex?
Josh writes:Sajeev –Great news! After research, waiting, and a little bit of compromise, I have finally bought my first ‘real’ car. Last month, I bought a ’05 BMW 645i convertible with very low mileage and a clean bill of health. It is wonderful and brings me a little joy every time I start it.Bad news! The country is currently gripped in a cold snap the likes of which we haven’t seen in 2 decades, and also, by the way, I live in Denver.
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  • Jeff S The Cybertruck was first unveiled and announced on Nov. 21, 2019. For over 3 years Tesla has been saying that this truck was going to be released soon. The mystique and surprise is no longer there. I think the Cybertruck is hideous but then I am not the target for this. Since its initial unveiling there has been the introduction of the Lightning, Hummer, and the Rivian truck. The anticipation of this truck and the mystique has faded. There will be a few that will buy this because they are hard core Tesla fans and some because it is different but Tesla should have been the first to market an EV pickup. GM is planning a compact EV pickup under the GMC brand starting at 25 MSRP. This should have been Tesla and Tesla could have downsized the Cybertruck to either a midsize or compact truck and been first. Tesla should have been first at the very least to release a smaller EV truck.
  • Bloke Wow, this should make a big difference, to those catalytic converter thieves who don't have tools like 'angle grinders' with them.
  • Carlson Fan The way the truck drops in the rear and the bed/tailgate become a ramp is genius! I'd buy it just for that alone!!! It would be awesome for loading snowmobiles and garden tractors in the back. However, my trucks need to be able to regularly tow heavy loads long distance, summer & winter. Sorry folks, current battery tech. isn't even close to what it needs to be for me to think even one second that a battery truck could replace my current ICE powered truck. An EV for a DD makes sense , but for truck you need a MUCH better battery.
  • Inside Looking Out For midsize sedan it is too small. It basically is a compact car.
  • Stodge I test drove the 200S and damn, its suspension was so firm, I was convinced it didn't actually include suspension at all. It hurt my spine and hip, it was that firm.