[blattimwind]

You're not supposed to floor it and giver 6.5 when she's cold. Driving with low loads and low RPMs will bring it quickly up to temperature and produce minimal wear; I've been told it actually produces less wear as the engine runs less time/revs cold.

It's a different story if you're pulling a heavy load and can't do anything about it. Then letting her warm up makes some sense. Most people don't do that.

[King-Aaron]

Yeah thats right. I build race engines as a hobby (currently have a cp-carrillo mazda BP in the works) and (I like to think) I have an understanding of mechanical sympathy. Obviously performance engines have different tolerances to mass-produced consumer items, but I like to treat them the same.

The benefits to slow driving is that it also brings the drivetrain up to operating temps as well - it's no good if the engine's at a good oil temperature but the differential and gearbox is still icy. But even letting the car idle for 10-20 seconds so it can push oil around the block, fill the galleries and start filling the lifters/head will help extend the lifespan of an engine, and then combined with a slow initial drive to allow everything to come up to temperature you should be able to give the car a bit more life.