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Coolant vs Water in Oil

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sly

12-29-2001 09:36:20

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Anyone know of a test to distinguish if the oil in a water cooled engine has water or coolant in it? I have a water cooled Kawaski engine that continues to produce a white foam film in the oil filler. JD dealer suggested it could just be water condensation. Compression is 175. No bubbles in radiator when running or under cylinder leak down test.

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Clooney

12-29-2001 18:14:45

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Re: Coolant vs Water in Oil in reply to sly, 12-29-2001 09:36:20

~Sly, in the past I have used a dye with a substance in it that shows up under a black light. They make it for engine oil, atf, power steering fluid, coolant, & a/c. ~I can't remember the name I used but it worked good, I got it from my local auto parts store. They also make a similar product that works with a florescent light but I don't like it as good because it doesn't show small leaks. All you do is put it in the radiator, run the engine until hot then drain a little oil & put it under a black light. ~The last leak that I had that was similar to yours I drained the radiator, removed the drain cock, installed an air conditioning hose fitting, hooked my A/C recharge station to the rad & put about 1 lb of freon in the rad then used my shop air to bring the pressure up to 15 lbs (or just under cap blow off pressure) & used my freon sniffer to sniff the inside of the oil sump. Freon will leak much easier than coolant so if you have a leak it will show up real fast.

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Frank

12-30-2001 09:18:36

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Re: Re: Coolant vs Water in Oil in reply to Clooney, 12-29-2001 18:14:45

I have also used the water-miscible dye and a black light. The stuff I used came from the Zyglo Div. of Magnaflux Corporation. I have also used the oil-based penetrant to check from the oil gallery side.

But if it were me, I would drain the oil, flush it pretty clean with quick slosh of diesel fuel, and then leave the drain plug out, with a drip pan underneath, and watch for water. There should not be condensation in the engine when it is sitting still at ambient temperature.

If no coolant shows, next I would jury rig a fitting to put the cap pressure in the system, like Clooney said...mayber like 15 psi or what ever it is. If it doesn't show coolant after awhile sitting (I'd plan on a day) with pressure in the coolant system, I'd say you have consensation only.

My $.02

Frank

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sly

12-30-2001 08:37:07

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Re: Re: Coolant vs Water in Oil in reply to Clooney, 12-29-2001 18:14:45

Thanks!!

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twopop

12-29-2001 18:32:21

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Re: Re: Coolant vs Water in Oil in reply to Clooney, 12-29-2001 18:14:45

the way i read you post,you do not have enough water to change the oil to grey color,so what i would try is to let the engine sit overnight,then very carefully loosen the oil drain plug and let any built up water to drain into a cup.if its clear its condensation,if its green its coolant..you can get up to an inch of water in the pan before it will mix.

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Allen

12-29-2001 13:58:54

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Re: Coolant vs Water in Oil in reply to sly, 12-29-2001 09:36:20

have your JD dealer send a sample of your engine oil out for a oil scan, they should have the sample kits in stock, kits are available for hydraulic oil, engine oil & anti-freeze, kits cost around $18.00 can.

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Sly

12-29-2001 16:51:18

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Re: Re: Coolant vs Water in Oil in reply to Allen, 12-29-2001 13:58:54

Thanks!

Do you know if I should:
1) Pull the sample hot or cold
2) From the top (via dip stick) or from bottom

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Allen

12-30-2001 04:33:32

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Re: Re: Re: Coolant vs Water in Oil in reply to Sly, 12-29-2001 16:51:18

Hi: it works best if you warm engine up, mixes up the oil, kit provides a siphon tube and bottle, you can do it this way if you are not changing the oil, if you are changing the engine oil just pull a sample while it is draining. you need to record # of engine hours on the oil, brand of oil used.

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sly

12-30-2001 08:38:00

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Re: Re: Re: Re: Coolant vs Water in Oil in reply to Allen, 12-30-2001 04:33:32

Thanks!!!

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