View Full Version : My mistake...water in oil

07-07-2012, 05:42 PM
I removed the intake manifold the other day and forgot to drain the water in the engine beforehand. When water poured out, I was thinking it just came out of the manifold and no harm could be done. Today I was thinking that lots of water probably went down into the crankcase. The only issue is I took the boat out this morning and put 1.5-2 hours on the engine waterskiing and wakeboarding. Everything acts normal and I'm about to change the oil as a precaution.

I'm just worried I've hurt the engine by allowing the water the stay in there this long. Is there anything I should do to help it?

07-07-2012, 06:08 PM
Is the oil looking like your morning frappe from Starbucks? If so, then yes, there is water in there. Check and change it ASAP and hope for the best. Water makes for a poor lubricant, so running it with the water would be rough on the soft metals such as the bearings, journals, pistons, rings and cylinder walls. The friction will cause scoring and premature wear.

Save the old oil and let the water separate. then see if the oil looks like it has some fine metal flake in it. This would be a sign that damage was done.

07-07-2012, 06:15 PM
Thanks. The dipstick oil looked normal but that doesn't mean much. I will check the oil when I change it.

07-07-2012, 06:38 PM

07-07-2012, 10:36 PM
The oil did have some water in it. It wasn't like a milkshake at all. The boat had been sitting for 4-5 hours since running it but the oil and water were almost completely separate. Fingers crossed...

07-08-2012, 12:33 AM
This is what my oil looked like 24 hours after I got towed in. Ilmor is reassuring me that my engine is fine...

07-08-2012, 05:43 PM
^ that's not fine at all!

07-08-2012, 06:26 PM
You could always send out an oil sample for analysis. I doesn't cost that much. However, there's not much you can do from the outside of the engine except change the oil and filter.

I've used Blackstone Labs with my fleet but here are a few other choices.


If it were mine, I would change the oil and filter again after my next time out. An extra oil change hassle is far easier than dealing with premature bearing failure.

07-08-2012, 11:08 PM
drain the oil let it sit and see if the water separates out and also have it tested... if water shows up then that's a whole new conversation with the ilmor rep.

07-09-2012, 12:36 AM
This happens in racing all the time, well checking for metal. Carefully cut open the filter. You should be able to spread the filter into a flat piece. It will tell you what happened. If you see a little small pieces don't freak out, that's normal, even in a good motor. You're probably ok. If you were running 7-8000 rpm I would say it's probably worth looking at but these motors don't create any kind of heat.

07-09-2012, 05:18 PM
If it were mine, I would change the oil and filter again after my next time out. An extra oil change hassle is far easier than dealing with premature bearing failure.

That's a really good idea actually. I would think some of the water will burn up from the heat during the next run and whatever is left will mix with the oil and be drained the next time. $15-$20 in oil and filter for insurance and peace of mind.