Royal purple XPR 10w40 question

[Boxtaboy]

Yeah!! According to that link, Mobil 1 makes the most hp!

Seriously though...I guess I'm gonna be the guinea pig here. I have been using Mobil 1 0W-40 on my car since the get go (it's an 01 base with 62k miles on the clock now), with oil changes between 12k-15k mile intervals or every two years (whichever comes first). Strictly by the book (according to the owner's manual). Let's see how long my engine lasts. Knock on wood.

So far, no engine issues whatsover except a broken water pump at 59k miles. I even threw in a bottle of Techron Concentrate about 1200 miles ago, and have not changed the oil yet because it's not time to change the oil according to my schedule.

FWIW, a friend of mine changed his oil (also M1 0W-40 exclusively), on his 2000S every 10k miles until he sold it (still running fine) at over 100k miles on the clock, for a 2006 987S. He also never experienced any engine problems whatsoever.