DRTGUY

I checked my oil today and noticed that their was yellow fluid on my dipstick so I opened up my oil filler cap and a gob of yellow cream was pooled up on the inside of the cap and smeared down the tube. I did an oil change not that long ago and before the change I never saw this yellow cream but I did notice rust on the dipstick. Whats going on here? Should I be worried? Thanks

GraveDigger85

Sounds like you have coolant in the oil which would cause more of a white milky substance. How's the coolant level? One for sure why to find out is take an oil sample and have it put through an oil analysis.

GraveDigger85

One for sure way, not why. Damn auto correct. :P

Matthew Burr

ya, somehow u got water in there, i know on my rig when i lived on the coast, it had soo many oil leaks and with the humidity that every now and then i would get moisture into the block (i also had a habit of driving through the river occasionally heh) so there are other ways it can happen, something to keep an eye on at the very least

sylver91

Good chance its just condensation, winter time will do that with short trips where the engine dosen't always get up to temp. If you are concerned, check the coolant level and see if there is bulbing from the rad or in the overflow tank. You can also visually inspect plugs if one looks like its been steam cleaned.

KevFord1993

Short thread so I didn't read much. If it looks like coffee with cream;

Water in oil (ie: condensation)
Coolant

DRTGUY

Its not white but I thought it might have been coolant. I know the truck warms up fast but never gets hotter than the R in normal. I'll check the plugs and overflow tank. If it is condensation how can I stop it?

KevFord1993

Do you have a block heater out of curiosity.

DRTGUY

No block heater. I checked for bubbling in rad. and over flow and nothing. The plugs had some tan on but mostly clean (they are newer so that might screw with results).

KevFord1993

Is there any gunk on the rad cap?