Join Date: Dec 2008
Location: State College, PA
crankcase's are made for oil, you should not have to play home chemist if your oil is not doing what you like than get a type of oil that does.
The best way to clean your engine is to run a HM or HDEO and let it clean over time.
I persoanlly run Rotella T5 10-30, It's rated for gas or deisle, it has a high dtergent level, an add pak that is equal to a HM oil, and HDEO's alway produce better ware numbers on a UOA, also if you have the 4.0 HDEO will give you a much neede healthy dose of zinc and phosphorus.
I C you do have the 4.0 after your SF run you should deff. switch to Rotella T5, your 4.0 will love this stuff, HDEO's produce better numbers in a 4.0 tahn anything on the market, thats a fact. best of all it's only @16 bucks a gallon at WM
QUOTE=billzcat1;wsar10 is right on point on this oil thread - as usual. Anyone reading this would be well-served taking his advice.
-03 WJ laredo 4.0 120k a few minor mods
-93 XJ 5spd, 3" zone lift