A friend of mine recently recommended using Royal Purple. I trust his opinion as he is a mechanical engineer and did a study on it for his company.

But I am curious to know what everyone here uses and what your experiences have been with various motor oils.

 

I've been using Mobil 1 Full Syn. It's a bit pricey, but I have always heard great things about Mobil 1. If someone else knows the wiser, I'm open to new ideas.

 

Mobil 1 5w30

 

Mobil 1 10w30

 

Mobil One 10W30

 

I'm still using the oil that came in it, as its only got about 500 miles on it. I too have been researching Royal Purple, however, and plan to use it. Only problem is I haven't seen it locally at all. So it might be hard to find, for me at least. I also watched them use it on horsepower TV. They changed all the fluids in a stock Camaro and ran dyno tests and Royal Purple showed a good pit of performance increase. I believe the video can be found on Royal Purple's website.