Originally Posted By: Covert24
1. I have a 1989 Chevy S10 4x4 with a 4.3L and 205k miles on it
2. I do not have my owners manual but I know that it calls for 10-30W or 5-30W depending on the climate.
3. I live in Charlotte, North Carolina in the USA where the summers or moderately hot and the winters can get pretty cold (ie. Low 20's)
4. I usually drive at a moderate speed. Never really follow the speed limit and I like to go fast on the highway (ie. Upper 70's to 80's)
5. Daily drive consists of mostly city driving with some highway in between. But mostly city
6. I don't really have any known problems with the engine itself other than some ticking here and there but not sure of the actual location of the ticking. Minor oil leak as well.
I would love to continue my venture with Synthetic as that is what I have been using along with some MMO every once in a while for te sludge problem I have. Although if there is a Dino oil that may better suite me than I'm all for it. As far as where to get it I would prefer store-bought for convenience. I have been changing the oil roughly every 3k miles since I got the truck with 180k miles on it. My first oil change was Penn Ultra 10-30W then it went to Mobile 1 10-30w then it went back to the Penn ultra and then my last oil change was the Penn Ultra 5-20W combined with a bottle of MMO and a bottle of V6 restore.
My next oil change is due and need some recommendations on what I should do in terms of best oil for my application. I'd love to have something with a lot of cleaning capabilities and I was looking at the rotella line of products for diesel engines but I'm not too knowledgable on this subject.
Here is a picture of my current sludge problem. This is on the drivers side head -
http://yfrog.com/h48vdmj
Thanks guys! I look forward to hearing from you!!
-Billy
Dear sir, havijng a Chevy 4.3 Vin "W" with the engien that can adjust to run better om premium gas abd says "VORTEC" on the headers, 1993 or later (this is a sweet, sweet engine, id buy the truck just for it,) I can tell yothat not only will it last forever and the truck will fall apart around the engine ask me how i know i can always find another though, but that 10W-40 is IDEAL for you, and we used it WITHOUT ISSUE for MANY YEARS>
10W-40. I promise you its ok.
Source: My engine always loved it, and its digital oil pressure gauge always showed good pressure. Dont let the numbers fool you, this car likes its 40-wt oil. Expecially under load!
COnventional, not synthetic, too. Hi-mi? I would, btu thats up to you.
I vote 40. Ive owned this truck and motr. And it was fine.