teasdam Posted August 4, 2004 Share Posted August 4, 2004 I have one plug that keeps fouling up from oil getting past the rings. I had this problem in my truck and I switched to 10-40 weight oil which seems to have fixed the problem in the truck, but this isn't working for the car I just rebuilt the engine and I was half expecting this problem...I didn't want to drop the money to bore out the cylinders and get new pistons...but I'm reluctant to go any thicker with the oil. Given that the rest of the engine is "new" and functioning as it should, would it be unwise to bump up to the next weight? How heavy do you guys go? This is a not turbo BTW. Link to comment Share on other sites More sharing options...
MorganM Posted August 4, 2004 Share Posted August 4, 2004 Might give that 'high milage' oil a shot? Suposidly it does some black magik on your cylinders, rings, guides, etc and helps seal stuff up. Sounds a little fishy to me since the way I belive they are achieving this is simply coating everything in a thick skin of pooh. Also had a guy swear buy it on his old Toyota 22R that blew oil sooooooooo.... Just an idea Link to comment Share on other sites More sharing options...
Guest taprackready Posted August 4, 2004 Share Posted August 4, 2004 I run straight 30 weight with no problems. I've also used 20-50 with no problems. No change in mileage either. Bill Link to comment Share on other sites More sharing options...
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