I know this topic has been discussed extensively, but I wanted to post this article. After a brief argument about oil, my buddy sent me the link. I found it very interesting and after planning to change my oil using Mobil 1 5W-30 this weekend, I might be giving Royal Purple a shot. Any thoughts, opinions or experiences?

http://www.animegame.com/cars/Oil%20Tests.pdf

 

Love RP. The car likes Amsoil better. Can't go wrong with either.

Bob

 

what about 5w-40

 

Oh dear GAWD!! Check my post history in 2 threads about "check engine light/should she be junked?" and "anyone know what these codes mean". I had an issue with a CEL on an A6,2002 with 36K miles on her. My audi dealer insinuated I damaged my engine because I used Royal Purple and it had too many detergents. Whatever. I had given her 5 oil changes, once a year, not by mileage. A lot of folks on here also said it was because I didn't change the oil engine, but my engine is CLEAN.
Long story short,Audi techstold me I needed both cam adjusters replaced for $3500-4300. I took it to an independant mechanic, and after a week, he tracked it down to a bad sensor and a new timing belt tensioner (for $995). He said BS on the RP being bad for your car, and after I lost complete confidence in audi mechanic/thieves, I will take his word over those quacks that said I broke my engine. Fucktards. [:@]

 

Believe me - I read that thread! I actually referenced the whole "excess detergents in RP can mess upyour engine" idea to my friend who foundit preposterous. That was actually why he sent me the article.

 

Funny!That's why I hate taking my car in. They take one look at a woman, and without so much as dinner or a drink, they proceed to bend me right over.

 

lol

 

Currently using amsoil 5w40....prolly gonna switch to Castrol syntech. I've heard mixed things about RP. A recent test in Austrailia had it as one of the best oils on the market though- better than Mobile1.