Anyone tried engine oil stop leak?

rjirvine · May 11, 2006

Has anyone added any kind of stop leak to their engine oil, or tried the Valvoline high milage oil? I think the V-6 on my 97 K1500 has a rear oil seal leaking. It's leaking out of the drain hole from the bell housing, and just sitting in the driveway has an oil spot about the size of a 50 cent piece. It's not tranny fluid. I'm not TOO worried about it, but had heard that the stop leak swells the rubber to stop leaks....

pm26 · May 11, 2006

Has anyone added any kind of stop leak to their engine oil, or tried the Valvoline high milage oil? I think the V-6 on my 97 K1500 has a rear oil seal leaking. It's leaking out of the drain hole from the bell housing, and just sitting in the driveway has an oil spot about the size of a 50 cent piece. It's not tranny fluid. I'm not TOO worried about it, but had heard that the stop leak swells the rubber to stop leaks....

<{POST_SNAPBACK}>

Forget the bandaids. A leaky rear main seal needs to be replaced. It is an expensive job becuase the transmission needs to come out, but necessary.

redvett · May 12, 2006

Try some ATF in the motor oil 1/2 qt will do.

rjirvine · May 12, 2006

Has anyone added any kind of stop leak to their engine oil, or tried the Valvoline high milage oil? I think the V-6 on my 97 K1500 has a rear oil seal leaking. It's leaking out of the drain hole from the bell housing, and just sitting in the driveway has an oil spot about the size of a 50 cent piece. It's not tranny fluid. I'm not TOO worried about it, but had heard that the stop leak swells the rubber to stop leaks....

<{POST_SNAPBACK}>

Forget the bandaids. A leaky rear main seal needs to be replaced. It is an expensive job becuase the transmission needs to come out, but necessary.

<{POST_SNAPBACK}>

I realize it should ideally be changed. I have replaced the clutch and rear seal on my 88 K1500 three times and know what a serious pain that is. I was looking for something to push off the inevitable.