I use Royal Purple 5-20...I think it's like $6.84/qt at Advance.....I paid like 85 bones for a case of 12 qts.....

 

They say that royal purple is no better than the other leading full synthetics. Your just paying twice as much. Studies have shown it produces no more power or less friction or last longer etc etc etc. . Just make sure you dont use a waxy oil like castrol or vavoline. They are not all that great for your engine, or so they say. Quaker state is supposed to be really good.

 

Full synthetic is actually cheaper annually, if you are able to extend the drain interval. No matter which brand you choose, check their warranty.

 

i use vavoline full synthetic or mobil one every 3k and have no probs i would never put regular oil in my car synthetic is by far better

 

I work there also part time, full time college student. We haven't had that sale yet, and I would never buy our oil. Just something scares me about it. Do you know who the manufacturer is? I've heard Havoline made it, but I think thats a crock.

 

ok i work for a repair shop n they say along with other mechanics..

if u didnt use synthetic from day one it wont do ne thing for you now if ur not sure if it was or not id say do it what the hell but if ur changing now i prolly would stick to what u use

 

Not true. You can switch to synthetic all the way up to around 60,000 miles. Anything over that and I would stick with your usual oil, UNLESS you were using a synthetic blend for all prior oil changes. Then you could switch to synth at a later mileage.

 

correction so for that i frgt to ad that part thanks for the correction