Was just doing a oil change in the driveway, everything was fine. Went to pour in the new oil, unscrewed the cap off the filler neck and found white scaly deposits all over the inside of the filler neck and also small droplets of water. I cleaned it wit a rag as best as I could then poured in the new oil. I checked the antifreeze level and it is low and couldnt find any signs of a e xternal leak. So I took a sample of the oil I drained out and sent it for analysis checking for glycol. (havent got results back yet) The old oil looked good to me. Kicker is the truck runs fine, doesnt smoke. if its not the headgasket leaking any other ideas how moistures getting in to the oil?

I use mopar 5w20 conv, and mopar filter. And the truck does have a k&n intake but i cant see any traces of moisture in the breather line routing from the intake. I dunno? Do u guys think its just erratic temp changes with the weather and short trips around town? My trucks only got 62000km and just dont see how the headgasket could be bad already.

 

You don't drive it enough. It is caused by condensation which occurs from repeated short trips where the oil doesn't get a chance to get hot enough to burn off the moisture.
A good, 1hr long trip once a month or so can prevent this from happening. As long as there is no milky stuff on the dipstick, it should be fine.

 

This is a common occurance with the 4.7, less so with the hemi. I agree with lxman1 and I am assuming you're north of the border so you have greater engine temp variations that will increase condensation.

 

I too have an 06' 5.7 Hemi 1500 and have seen the same thing you describe at times. I am about to turn 97,000 miles and have seen the issue you describe as far back as when the truck only had a 10,000 miles on it. Nothing to worry about. As others have said, the Dipstick is what you want to worry about. As long as that is clean, you are fine.

 

Good to know.

I wont fully relax yet until i get the results back from the oil analysis.

 

Got the oil results in the mail the other day. Good news is the oil tested negative for glycol. But where im stumped is they found light fuel dilution in the oil.

At the time i did the oil change I didnt know I was going to take a sample so I drained the oil pan and oil filter into the drain pan. And thats where I took my sample from. But im stumped on how fuel got mixed into the oil. It scored 2% abnormal would be considered 4% according to the test its marginal contamination.

Anybody else find trace amounts of fuel in their oil?

 

In small amounts it's normal as valve seals wear and you get a small amount of leakdown. My guess is it's gonna be pretty common with a Hemi since the tolerances of the piston rings are pretty loose in a modern Hemi (can you say "Hemi Tick"?). I wouldn't be overly concerned about it.

Maybe send another sample for analysis in say 15-20k miles and see if the percentage increases significantly...

 

Cool thanks for the knowledge.