oil

I am resorting to here, this is my first post. I have a 2005 2500 HD 6 Liter. Started truck a couple weeks ago at -10F heard a 'pop' sort of thing. Didn't think anything because it was cold. Then I noticed black smoke coming from exhaust. I just let it warm up for 10 minutes, gave it a...

I just bought a new (well, new to me) Jimmy. It's a 1999 sle 4.3 L V6 with 209k mi ... I'm just wondering the best motor oil I should purchase for optimal performance. I drive about 10-20 mi a day in Ohio weather. I'm going to give him an oil change here soon and just wanted to ask ya'll on here...

OK, so I have a general question about the oil cooling lines. What's the deal with leaky lines? I had mine replaced, cause they were leaking where the rubber meets the metal flange, and now less than 10,000 miles later they are leaking again. Is this a design flaw with the lines? Is it a known...

I have a 2000 GMC Sierra SLE Z71, 217,000 Miles. The truck sat for about 8 months and yesterday I renewed the tags and changed the oil. The truck had normally ran between 40-45 on the OP Gauge, now it's idling on 45-50 and now at 40mph it's about 60. I don't remember it being this high...

About 8 months ago my oil pressure gauge messed up and instead of the needle being in the numbers, it is all the way off to the right of the gauge. Two days ago, that gauge started bouncing from one position to another and finally my oil pressure low light "DINGED" at me and gave an alert...

I have a 2004 Sierra Z71 that is my baby. It has 112k on it and I have used synthetic since day 1. I just did my regular oil change today and when crawling under the truck I noticed some spots that were wet from new oil. One around the drain plug (I figure the plus is just old) the other one(s)...

Hello! I have a 2000 Sierra with 250000 KM's on it. Last winter I had no oil pressure and cream color engine oil. I brought it to a shop and they ended up tearing down the engine to get to the head gasket and heads. What they found was the heads were warped. So they got them milled down...

Was checking my oil the other day and noticed signs of a blown head gasket on the dipstick. The oil/ water combination of a mocha colored substance on the dipstick. I changed the oil the next morning w/o starting the motor to see if there was any water/ oil separation in the oil pan. There...