Where does the oil come from in the rear main seal?
On most engines, oil leaks can occur above and below the rear main seal. It could be a leaking oil pressure sensor, oil pan gasket or galley plug near the seal that causes oil to come from the bell housing. Adding dye to the oil can help reveal where the oil is actually coming from. Check the transmission and oil pan
What can I use to stop a rear main seal leak?
Whereas the Rear Main Sealer is less concentrated and specifically formulated exclusively for leaking rear main seals. If you are not 100% sure where the vehicle is leaking or there seem to be multiple leaks then we recommend using BlueDevil Oil Stop Leak.
Can a rear gasket leak cause an oil leak?
Some seals and gaskets in your engine never cause severe leaks because of the design or because they are not subjected to high oil pressure in the engine. In contrast, the rear main seal is an engine component that is highly likely to develop a leak.
Where is the oil pan gasket under the rear seal?
The oil pan gasket is just below the rear main seal. An oil pan gasket is also usually much less expensive to replace so it’s important to check for leaks in your oil pan gasket before you jump to any conclusions.
Is the rear main seal or oil pan leak?
Got under it to take a look. Small oil accumulated between motor and trans. Clearly its engine oil, by the way. I thought it would be the rear main seal; however, a mechanic friend said on and 08 with that many miles, more likley the oil pan leaking and rear main seal.
Whereas the Rear Main Sealer is less concentrated and specifically formulated exclusively for leaking rear main seals. If you are not 100% sure where the vehicle is leaking or there seem to be multiple leaks then we recommend using BlueDevil Oil Stop Leak.
What to do if you have an oil pan leak in your Chevy Tahoe?
If the leak has been diagnosed as coming from the engine rear cover assembly, refer to Engine Rear Cover Replacement in SI and remove the engine rear cover assembly. Inspect for engine block porosity where the engine rear cover mates to the engine block.
Can a gasket seal stop an oil leak?
Oil Leak Sealer Can’t Repair A Torn Or Worn Gasket. The way stop oil leak products work, depends on the brand you buy. There are some out there that claim to thicken the oil viscosity enough to stop the oil from getting by weak seals.