Oil leaks on 2007 ML 320CDI
03-06-2014, 06:28 PM
#26
Out Of Control!!
Had the dreaded oil cooler leak fixed by dealer almost two months ago. Parts were cheap but labor to take everything off the top of the engine and put it back was a killer. Dealer knocked $1000 off to get the bill to somewhere around $3500.
Apparently the seals in the oil cooler fail due to high temperatures. Parts guy said new coolers have improved seals but that might be BS.
My 2010 diesel had 90,000 miles on it when the leak started. Drove it for three months with the leak. It was just messy on the garage floor in the beginning but it got worse.
Ordered a new gasser when I picked up my repaired vehicle. I am keeping the diesel as a beater though.
Good luck!
Apparently the seals in the oil cooler fail due to high temperatures. Parts guy said new coolers have improved seals but that might be BS.
My 2010 diesel had 90,000 miles on it when the leak started. Drove it for three months with the leak. It was just messy on the garage floor in the beginning but it got worse.
Ordered a new gasser when I picked up my repaired vehicle. I am keeping the diesel as a beater though.
Good luck!
$4500 knocked down to $3500.
I have to believe some of that was for other work.
04-06-2015, 01:44 PM
#27
Member
To make your DIY catch can more effective, fill it with steel wool. The increased surface area will catch more oil vapor. Adding a drain valve will make your draining easier like a Fumoto or EZ drain.
04-12-2015, 11:01 AM
#28
MBWorld Fanatic!
people need to learn to service their own cars.I did not know anything about diesel till I bought one.I fix and repair it myself,thanks to the internet.
04-12-2015, 05:27 PM
#29
Member
That being said, why Mercedes put an oil "cooler" inside the engine block is a complete mystery to me.
04-12-2015, 06:57 PM
#30
Out Of Control!!
04-13-2015, 12:35 AM
#31
Member
04-13-2015, 11:39 AM
#32
Out Of Control!!
If it weren't for a poor choice of seal material, no one would think it was a bad idea.
The guy who put it there probably did not pick the seal.
The guy who put it there probably did not pick the seal.
04-13-2015, 10:51 PM
#33
Its more than just picking the right material for the seal. The expansion rate of these two parts are different. So they can expand and contract at different rates. Mercedes should have done better in R&D. Ford diesel F350's also had similar issues with locating the oil cooler in the same location. Unfortunately, nobody really knows what is the exact cause.
