BuudWeizErr wrote:Hmmm, if hes that good, maybe I should pose a question for him, if you don't mind.
My SR now has about 2K miles on it from the time I got it. I am on my third oil change on 10W30, and I want to switch to synthetic, probably redline. What weights and is there anything I should put in before I do the oil change? Any neat tricks like that ATF thing? I live in Southern California.... in the desert, if that matters.
Also, I heard (I think on this board) about putting a gallon of diesel fuel in with a normal tank will help clean some carbon deposits out of the engine. Any truth to that?
Thanks.
Bud , don't put any diesel fuel in your tank.
When you say SR I assume SR20DET not SR20DE?;)Never use thinner than a 40weight in a turboed engine.Better yet a 50 weight.Some suggested oils:
MOBIL1 0w-40, 15w-50 (I like their new SuperSynformualtion , it seems for real and not a step back like when they switched to triSYn.)ValvolineSynPower 5w-40 or 20w-50 (Valvoline also makes some good racing oils in 20w-50 but stay away from them in a daily driver. Some results suggest theSynPower oils are not a real good choice for extended drain, but I dont do extended drain anyway and neither should you, I feel this are especially good choice oils, when your engine is less than clean inside, but you dont wanna run a group I basestock drive clean oil)
Stay away from Castrol Syntec for now.(They are currently improving their formulations a bit, but except for their 0w-30 which is too thin for your application, their Syntecs are outperformed by their bargain GTX:eek)AMSOIL in 10w40 and 20w-50 (mostly group IV and w/ some group V like MOBIL1)Redline 10w-40, 20w-50 (mostly group V basestock, but you do pay for that group V)
Any one of those oils will do well in your engine.
Turbo's especially need thicker oils, because, when the engine stops the flow of oil stops, but the heat is still coming for a while, in oils of low quality base stocks, or too thin a formulation this will result in baking/coking of your oil in your turbocharger and elsewhere.This is one major reason why many turbos need early rebuilds.A oil that is strong, will very much help prevent this.
Fred...
PS: Good write-up Rubin..
