Driving down the interstate my discovery is blowing oil out underneath all over the bottom of the engine, exhaust, etc. Sitting still it's not leaking oil, only when driving at higher rates of speed. Shop says it looks like the majority of oil is leaking from lower intake gasket and maybe a little bit from the valve cover gasket. I have had all these gaskets and the upper intake gasket (Plenum Gasket?) replaced in the last 10 months. What could be going on? These are new gaskets. Shop says maybe $1200 to fix

 

If its DEF engine oil then take it back to who fixed and it should be done under warranty............this is assuming you guys get 12mths warranty on work done by a garage etc

 

Yeah, like UP said, IF it is engine oil, then I agree, they did a poor job. Take it back, play dumb, and say in a nice tone, " Driving down the interstate my discovery is blowing oil out underneath all over the bottom of the engine, exhaust, etc can you help me figure out what it is?"

Then when they say it is all these gaskets they replaced, nicely remind them THEY did the work. let us know what they say.

 

What is DEF engine oil? This happened 2 hours after I got the oil changed and the front and rear differentials and transfer case serviced. I thought it was interesting this happened right after an oil change, but I don't know how an oil change could cause this?

 

DEFinitely engine oil.

Make sure the oil filter is on tight.

 

Check the filter !! I had mine done @ the dealer, got home and noticed oil under the truck. Filter was loose, I got about a 1/2-3/4 turn on mine.

 

Yep - check that the filter is tight - ALSO if your vehicle still has the belly pan under the engine oil will lay on top of it = until you go down the road, then its blown off and sprays everything it wants!

 

Thanks, my first assumption was they didn't tighten the filter, but I took it back and they said it was good and it happened again. These are the same guys whom left a rag inside the hood on the engine.

 

You need to take upon yourself to find the leak. I would suggest you remove the lower shield, power scrub the engine start it and watch to see where it is coming from.

 

Is it still leaking since you took it back?