Comments on: What is the best oil leak additive for trucks?

By: vic

vic — Fri, 11 Dec 2009 17:55:59 +0000

LIKE THESE OTHER GUYS SAID, IT IS ALWAYS BEST TO CHANGE THE GASKETS. IT IS THE BEST FIX. BUT TO FIND OUT WHERE THE LEAK IS COMING FROM, DEALERSHIPS AND SOME OTHER SHOPS HAVE A DYE THAT THEY CAN RUN THROUGH THE SYSTEM AND TAKE A L E D STYLE LIGHT AND PINPOINT EXACTLY WHERE THE LEAK IS. THAT WAY YOU KNOW WHICH GASKET TO CHANGE. MOST ADDITIVES JUST THICKEN THE OIL SO IT IS HARDER TO GET AROUND THE GASKET. AS SOME OF THE OTHER GUYS HAVE SAID IT IS JUST A TEMPORARY FIX TO THE PROBLEM AT HAND. GOOD LUCK
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FORD MECHANIC/TECHNICIAN

By: tcederquist

tcederquist — Fri, 11 Dec 2009 17:35:59 +0000

your filter is not tight enoughor the old seal is still stuck in side
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By: davedebo198305

davedebo198305 — Fri, 11 Dec 2009 17:28:59 +0000

try some bars oil stop leak. next time u change the Oil in that truck use a can of eng restore

http://www.restoreusa.com

good luck
hope this helps
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By: tito_swave

tito_swave — Fri, 11 Dec 2009 16:44:59 +0000

Here is a high tech solution for you.

Above the oil filters exist approx 3-4 crankcase covers on the engine block, they are easy to reach. remove them, clean them and the block mounting surface, place new gaskets (they are cheap) and torque to spec. Your oil leak should disappear. The oil pan gaskets are also notorious for ripping on these engines.

Be sure to wet the filter seal ring with oil before torquing down as a dried ring can crack and cause leaks as well. add yahoo.com to my username if you have any more Qs.

Additives are snake oil, if the engine was designed for them , the owner’s manual would recommend them. Fix the leak right and you will have a road worthy engine. Don’t leave your safety in the hands of people who want to sell you bottles of bandaids. Additives are a multi billion dollar industry. I only use fuel injection cleaner every once in awhile.

Take care.
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By: antiqueclockservice

antiqueclockservice — Fri, 11 Dec 2009 16:09:59 +0000

Hi,

I would start by replacing the oil filter. I think you might have a damaged seal on the filter. You can fill the filter on the bench with new clean oil, lube the sealing ring and screw it on after cleaning up the oil around the suspect area. I cannot recommend a fix in a can for oil leaks. There are quite a few downsides to such products in my opinion. You risk clogging a key oil passage and may cause more damage to the engine than resolve your problem.

Good luck
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30 years in automotive engineering for one of the big 3

By: monotonous_life7

monotonous_life7 — Fri, 11 Dec 2009 15:21:59 +0000

change the oil and put some 20-50 in it with a can of restore.
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By: Lemar J

Lemar J — Fri, 11 Dec 2009 14:38:59 +0000

Yes. It’s called replace the leaking gasket.

I know the vehicle is 26 years old, but there isn’t an additive on the market that is going to work for long, if it doesn’t tear something else up in the process.

Those stop-leak type additives are meant to get you by until you can have a proper repair done. A good guage is if you fill your gas tank up and then use the stop leak, you should have your vehicle in a repair shop before the next fill up.

BTW, that leak is probably coming from the valve cover gasket.
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By: Rakel

Rakel — Fri, 11 Dec 2009 14:29:59 +0000

It sounds like the engine "side cover" gasket is leaking. Especially on a truck of that age, and a gasket made out of cork, I would replace the gasket if it were up to me. The gasket is not expensive, nor is the labour to replace it. Those 300 cu. in. inline 6 cylinder engines were one of the best engines for Ford trucks.
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