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EFV-8 Club Forum / General Ford Discussion / Engine oil stop leak

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Discussion Topic: Engine oil stop leak -- page: 1 2

silverchief

07-31-2017 @ 12:15 PM

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Looking for helpful insight into Bar's Engine Oil Stop
Leak.

Don't know if my long term oil leak is from the pan or rear seal. I know Bar's is a old company with a good reputation regarding it's radiator stop leak - but I have a great engine and don't want to risk damaging it with an unknown product.

Thanks.

carcrazy

07-31-2017 @ 12:24 PM

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Where is the leak coming from? Is it from the rear of the crankshaft? The best fix is to take the time and expense to fix it correctly. I, like you, would be reluctant to put a stop leak product into my crankcase.

TomO

07-31-2017 @ 1:56 PM

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All that the oil stop leak products do is swell the seals. Your engine could have a slinger type rear seal and the Bars would not do any good. If you have one type of a full circle front seal, the Bars could damage it, by swelling the rubber.

As long as you just have drips, I would leave it alone. If you are losing a lot of oil, then pull the engine and have new seals put in.

Tom

len47merc

07-31-2017 @ 1:57 PM

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silverchief - how much oil is your Ford marking it's territory with between oil changes? The typical most effective way to address this on our Fords is with a galvanized drip pan, a cold beverage and a bunch of lies.

If losing quarts of oil between oil changes you've an issue. If less than a quart, and what many typically see is 1/8-1/4 of a quart (no more than 1/2) then you likely may never do any better than that and you'll need to find a way to live with it. Even at National Meets many of the fully-restored trailer queens/Dearborn cars can be seen with drip pans under them.

This assumes your leak is from the rear main seal, where it most often is realized. Suspect you'll find that to be the case.

Personally I steer clear of patches and quick fixes. If I've a leak of any kind that is beyond the normal expectations the focus has to be on addressing the source of the issue and not band-aiding it. Bars makes great products for emergency quick fixes if and when absolutely necessary. I'd never use it in one of our V8s though.

Steve

This message was edited by len47merc on 7-31-17 @ 2:35 PM

Stroker

07-31-2017 @ 2:31 PM

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AND Ford even employs a device that's on the bottom of most oil pan clutch covers that appears to be simply a cotter pin inserted in a hole. It's FAR MORE than that. This device actually allows the oil leaking from the rear main seal to be "wicked"-out of, and thence blown-away by the air-stream under the car whilst driving. Attached is a photo of a V8-60 pan with the cotter-pin properly installed.

This message was edited by Stroker on 7-31-17 @ 2:32 PM

Stroker

07-31-2017 @ 2:33 PM

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OOPS, forgot the photo.

cliftford

07-31-2017 @ 2:45 PM

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Here are sources of leaks I have found in the past: loose dipstick tube where it threads into the pan, and bad or missing gasket on the dipstick its self. Ocasonilly you will find that one or more pan bolts are loose enough that oil will drip out around them. The stop leak is just a band-aid fix at best.

This message was edited by cliftford on 7-31-17 @ 3:37 PM

silverchief

07-31-2017 @ 4:34 PM

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Thanks for the excellent advice. Makes my decision easy.

I estimate I lose about half a quart over a months time.

Tomorrow I'm going to the DIY garage and snug up oil pan bolts. Is dropping the pan to replace the gasket a simple matter? Seems I recall a thread indicating it is somewhat involved.

sarahcecelia

07-31-2017 @ 8:06 PM

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A pint of brake fluid will stop a rear seal leak as a rule. It will swell the seal a little. I've used it on motors and transmisions of customers cars when I worked for auto dealers, at the advise of my then Service Manager, Ed Hamburger,now CEO and owner of Trik Racing Parts and Hamburger Oil Pans, with good results.One guy with a 1950 Chevy, was losing a about a quart going about 5 or 6 miles to work and back; added the brake fluid- about a week later-NO MORE LEAK!!!

Regards, Steve Lee

This message was edited by sarahcecelia on 8-23-17 @ 12:14 PM

TomO

08-01-2017 @ 7:23 AM

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Bill, before you snug up the oil pan bolts, clean the timing gear cover and oil pan to determine where the leak is. Over tightening the oil pan bolts can make the situation worse by distorting the gasket surface of the pan by the bolt holes.

Tom

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