Oil in coolant...Need some input

[RustySeaRustyDoo]

Ok so I recently had the engine pulled to try to locate an oil leak that i have been dealing with for a while now. I was losing about a half a quart or so everytime I rode last year and it all ended up in the hull.

Didnt find any leak on the engine itself when I had it out, so i cleaned the hull spotless and put engine back in. Went out about a week ago for the the first time this year for about a 20 mile trip. Ski ran great, hitting about 8100 rpms, oil level was fine. Coolant level good.

Went out this past Sunday on a 70 mile trip, experienced oil warning during some rough water riding. Checked oil and was a little low so i filled back to normal level. Also experienced some surging in RPMS at idle from 1800 to 2200. Not real bad but definitely noticeable. And at around 5100 rpms notice a little surge also at one point, but not the whole time.

Never experienced over heating during the whole trip. When I got back from the ride i checked oil level was low and saw some oil in the hull again. Checked the coolant and it was filled with milky oil and coolant mix.
Note: Oil in engine was not milky. Looked ok.

Where should I check first? Should I pull the engine again?

Thanks!!

[skipSC]

Sound's like a head gasket, but usually the coolant bottle is empty and you get a overheat alarm.

[RustySeaRustyDoo]

Sound's like a head gasket, but usually the coolant bottle is empty and you get a overheat alarm.

See I was thinking the same but this bottle was filled up to the cap and I was running good rpms too, but never got a overheat alarm at all. Taking into consideration, It was a long trip.

[jtskier11]

Oil cooler issues possibly????

[Sick Puppy]

If your compression checks good, sounds like it could be your waterpump shaft seal letting oil into the cooling system. That does not explain the surging though.

[outboard john]

Seems like a leak down test would eliminate or comfirm a head gasket issue and is relatively easy to do.

OBJ

[JRridermd]

brian, how much oil did you lose on your trip? i am wondering if you can clean your hull again and put overflow tube into a empty gallon jug or 2 liter bottle to determine if its just coming out of bottle or if its leaking from engine somewhere, just a thought....

[RustySeaRustyDoo]

Not a full quart. It read on the very tip of the dipstick.

[Tony Farina]

Did you ever figure out exactly what the problem was. I have just had the same issue with my RTX 255 with 54 hrs

[phumb]

does the oil in the hull look milky like the oil in the coolant? if not, may be 2 different issues with the hull oil being pto?