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Stop Leak Engine Fluids Safe?

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Old 03-04-2008, 11:47 PM
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Default Stop Leak Engine Fluids Safe?

With regard to treating engine oil leaks from the main rear seal, I've gotten mixed suggestions, with some saying to use a quality stop leak fluid like Lukas seal fluid, and the rest saying that using stop leak fluids for the engine poses a risk in disrupting oil pressure or clogging cylinders.

For a '99 5.7L V8 LS1, is it safe to pour a stop leak fluid into the engine for a minor leak at the rear main seal?

Thanks.
Old 03-05-2008, 01:02 AM
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Originally Posted by Crimsonnaire
With regard to treating engine oil leaks from the main rear seal, I've gotten mixed suggestions, with some saying to use a quality stop leak fluid like Lukas seal fluid, and the rest saying that using stop leak fluids for the engine poses a risk in disrupting oil pressure or clogging cylinders.

For a '99 5.7L V8 LS1, is it safe to pour a stop leak fluid into the engine for a minor leak at the rear main seal?

Thanks.
haha...no such thing as "mechanic in a can" ...fix it the right way.
good luck.
Old 03-05-2008, 01:52 AM
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lol mechanic in a can, anyways sometimes it will work but thats the risk your taking when you try the cheap way. it doesnt always work out, however lucas makes some great products so I wouldnt hesitate to use it for a temporary fix until I had the cash or time to fix it correctly
Old 03-05-2008, 09:44 AM
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Honestly, stop leak is just a bandaidm that isnt garunteed to work lol, i agree with toronto, fix it the right way.



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