February 14, 2006Recently I tried to replace the oil pan gasket on my GMC Sonoma 2.2L but ran into trouble because the pan is tightly fitted over the frame and would not come out. I spent hours wedging my fingers into a tiny space scraping the old gasket off, and I got almost all of it off. When I was putting on the new gasket, I found an extra piece in the gasket kit that I had not even seen when I was taking out the old one- a curved rubber piece about 5 inches long. Turns out my truck uses a two piece gasket setup, the main one being the compressed cardboard gasket that fits around the majority of the top ridge of the oil pan, and the smaller and thicker curved rubber gasket that fits in the nook at the back of the oil pan closest to the flywheel. I could not replace the small rubber one because I just couldnâ€™t fit my fingers or any tools in the tight space between the pan and the flywheel to get it out, so I tried covering it with hi-temp oil resistant gasket maker using a long q-tip, but I still wasnâ€™t able to cover it like I had hoped.
After I put it all back together and it held up fine with no leaks until I ran some sea foam through the crankcase, which caused it to leak from the small rubber gasket. I really donâ€™t want to pay someone a ****load to lift the engine up and take the pan off all the way to redo the gaskets.
1) Iâ€™m thinking of trying an oil additive to help seal the gasket, but havenâ€™t really had any luck finding a chemical specifically designed to seal oil pan gaskets. Anyone had any luck trying this?
2) Iâ€™m also thinking about dropping the pan again and really getting a good coat of gasket sealer on the problem gasket, PermatexÂ® aerosol Rubber Gasket Dressing looks good. I just need to find a better way to get it onto the gasket.
Or should I just pay to have it done right? Iâ€™m trying to save for up for a Silverado 1500 right now, so I really donâ€™t want to have to pour any more money into my truck than I have to.