Originally Posted By: bepperb
BuickGN, thank god you are going to use a 5w so that all the nooks and crannies can finally get cleaned out.
Yeah, I'd have to side with CaterHam that eventually 10w-30 will become obsolete and some manufacturers are already there with their synthetics. For marketing purposes we probably have another decade of seeing it widely available, though.
I'm surprised so many see a really high HTHS is always desireable around here, as that also results in a reduction in fuel economy (even moreso than viscosity in one study) which is important to some people. Me... I just hang out around 3 and call it a day, but with the salt around here 200,000 is about as far as I'll take a car.
I agree, once the regular 5w-30s become as shear stable as a 10w-30, there's no point in having the 10w-30 around.....as far as I know.
Around here, the bodies last forever. That's why the HTHS is so important to me. Gas mileage differences are so small it doesn't even factor in to which oil I choose. As of now, gas is free anyway.
But yes, now the nooks and crannies will be well lubed lol. I bet they're completely dry with the syrup I've been running.