thef150guy

I noticed the samething on the oil fill cap and neck on my truck. I dumped some marvel mystery oil in before my last oil change and it didnt seem to clear it up. As for my coolant, its seems fine also. Would adding a quart of ATF 500 miles before my next oil change help?? What about sea foam? I feel like my engine is noisy and would like to be sure this crap is all cleaned out to prevent issues. Also for some background, my truck has been run with conventional 5w-20 all its life. And I recently swaped to mototcraft synthetic blend last change. I did notice this residue before the switch though. Thanks guys, and to the OP, I dont mean to steal the thread.

MuchoMuffin

You might want to flush your coolant? If you find more or that stuff then you are in trouble. My brothers stang had the same problem and it was NOT pretty.

Carcrazygts2

Have a engine block test done. Simple kits cost aroun $50. It will let you know for sure if you have a blown headgasket or not. ATF really will only work with fresh oil changes.

ol_red_2

its most likely just condensation. its pretty normal. it happens more than you think. I work at a ford dealership and see it a lot. if you still worried have a block test done. like carcrazygts2 suggested

jferg92

Yep, like they said. Pretty simple, and if you're worried than $50 is well worth the piece of mind
http://m.napaonline.com/parts/PartsD...006_0006398563

thef150guy

Will a quart of atf or adding sea foam clean this out? I already change my oil regularly.

jstockert

Carcrazy, what are the benefits of running 1 quart of atf with fresh oil for 1000 miles?

ol_red_2

atf cleans the gunk out if im not mistaken

wjb21ndtown

I personally don't care for oil additives, and if I add them at all, I change the oil right away. I have used sea foam with seemingly good results (it helps dieseling issues… where a gasser keeps running and sounds like a diesel motor after you shut it off) on older model cars. But when i do I run it as a fuel additive, then in the oil system for a 15 minute flush on a warmed up motor. I never leave additives in for any extended period of time, but to each their own.

If you're really worried about getting the condensation out, get the motor temperature up for 20-30 minutes. Go for a long drive, pull something, keep it at higher RPM (2200 +, but under 3,000) for a somewhat extended period of time. From what I understand, oil needs to reach at least 115-120 or so to burn off the condensation.

If it is just water, you shouldn't have to add anything to get it out, just heat.

Pontinater

Thanks for all the info, I really appreciate it. The more I think about it the less worried I get, seems like its not too out of the ordinary. It had been kind of cold out around the time of year I noticed this. Also I work from home so I really don't drive that much anymore. If I do go out usually I go 5 to 10 mins down the road, hardly enough to really get everything up to temp. I've checked a few times looking in through my oil fill hole and haven't noticed anything.

thef150guy I don't think you stole my thread haha. I'm glad my post's can help others.