Haha, I just built a W24 Octo-Turbo, now what?! |
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Joined: Wed Dec 21, 2005 8:40 pm Posts: 3492 Location: Calgary, Ab
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We don't have a block heater for either car. 5w30 Mobil in both, neither of them have trouble starting at -40. They grumble and whine and clatter a little bit, but much of that is in all the other fluids (power steering), the frozen solid engine mounts, etc.
Block heaters don't do anything for the oil in the pan, by the way, and as such doesn't get you oil pressure any sooner. They heat up the coolant, which makes the oil on the cylinder walls easier to move, which make it easier for the car to start. It's really no easier on the engine, in my opinion. Putting in the proper oil that still flows at -40 is the best protection.
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