Originally Posted by Buffalo02Z28

I'm running Motorcraft 5W-30 in my Camaro right now. Good stuff.

Originally Posted by chsxfireems

Still using that Motorcraft filter too?

Originally Posted by chsxfireems

Nope. Definitely not. I've taken a look at their marketing materials (aside from the fact that their API ratings are still not up to current, as previously stated.) and examined the photographs they took of bearing surfaces. Initial bearing surface is rough under extreme magnification. Next photograph is of the same bearing after using a competing oil, surface show's some smoothing (a sign of wear) but still has some rough texture. Final image is of the bearing after using royal purple... the bearing surface is completely smooth (indicating severe wear).
So no, its not good oil.

Originally Posted by Camaro 69

That's a good point about the bearing surface. What's in their oil that makes the bearing look like it's been sanded down smooth? I wonder if they really realize what they are saying there, because the results they show are actually bad. Here's a link to it: http://www.royalpurple.com/rp-perfor...dvantages.html