I think this has alot to do with the fact that most of the owners fill their engines with the wrong viscosity oil. If you poll every VR4 owner, most use 5-30 or 10-30. That is much too thin IMHO. After a couple thousand miles, the oil will break down and become even thinner- providing less protection. ... but that's a whole new thread topic at this point.
The owners manual clearly states that you SHOULD (not may use) use 20-50 in severe conditions. What dictates severe usage? It doesn't really matter to me... When it comes to providing the most protection for your engine, i'll always use the thickest oil suggested by the manufacturer. I'm sure racing an EVO constitutes as severe duty [:@].

J

 

That video is great Joel... my god that sounds even louder than your stealth did when tim was still running it. lol such a bad idea to run the car when you hear that sound

 

****.... i watched joels video and i think that happened to my car as well hoow much cash am i lookin to spend

 

I just wanted to clarify that that particular video is NOT my property nor is it a video of my car. My 92 VR4 is still in good health (knock on wood).

Joel, CA