Re: oil in the radiator

Posted by Determined on December 07, 2018 at 06:51:14 from (216.130.212.201):

In Reply to: oil in the radiator posted by T L on December 05, 2018 at 15:26:00:

Quoting Removed, click Modern View to see

The liquid and pellet version of Bars leaks has a high petroleum content and requires adequate heat and circulation to completely dissolve and mix in the pellets.

Having had a repair shop at an airport I worked on a lot of vehicles that typically would be started, used for 5 minutes or less then shut off. Tow tug's, forklifts, start generators etc.

Quite common to get a vehicle in the shop to repair a coolant leak where Bars leaks had been dumped into the rad.

Everyone hoping for a cheap fix, if one bottle does not work then lets try adding a few more.

Without adequate heat and circulation to dissolve the pellets what ends up in the drain pan looks very much like what the original poster described.

Dump it in, don't read the bottle, don't run the engine up to temperature then wonder why it did not work and send it to the shop for repairs.

Personally I try to rule out everything I can when diagnosing a problem.

It helps avoid those one in a hundred chance things that come back to bite you later.

So in my opinion;

Could it be Bars leaks? Yes

Could it be combustion residue? Yes

Could it have a flaw or crack in the block? Yes

Could someone have accidentally dumped something from the wrong jug into the rad? Yes

Could it be 50+ years of various substances mixed together? Yes

Myself I would start with flushing the cooling system real good.

Liquid dish soap works good to get oil out of the hidden places in a cooling system then run it good to determine if there is a problem.

If there is still a problem then begin testing.

If the engine can not be run you are limited to;

Pressure tests

Visual inspections

Fluid analysis

Magnaflux testing

Or cross your fingers have it rebuilt and hope it does not bite you.

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