DD15 oil leak and in reservoir

More information about oil cooler removal, inspection and installation

 

Most likely cause is an oil coolant module gasket. But make sure to pressure test your oil cooler while you have it apart to make sure it is not the issue. Your transmission cooler is also another location you can get "oil" in your coolant.

 

Yes they emailed me estimate they are charming for diagnose oil in coolant
Replace oil/coolant module
Flush cooling system and replace coolant and flush system
Change engine oil
Replace surge tank
Parts quote #q061189981 (3645.98)
Labour hours 17.5 (140 an hour)with tax 7050.

 

Wow, for that kind of money, I would take a week off and do it myself and be further ahead.
And maybe you'd get lucky and find the actual problem wasn't quite so bad after all.

 

5-6 hour labor plus $1000-1200 for parts(oil change included). there is no need to change entire oil cooler module. the oil cooler with gaskets costs $200-250 .

 

That's a freightliner dealership price . And i left my truck there already. If somebody knows any other good mechanic for Cascadia with dd15 around Toronto please let me know.
Thanx for the posts

 

usually oil coolers two gasket seals get old and under pressure oil sneaks to cooling system. basically engine needs 3 gaskets( $ 110-120), a gallon of gas to clean coolant reservoir, one coolant filter, 10 gallons oil and oil filter. If cooler element must be changed add another $250.
$7000 for that repair is highway robbery !

 

I have the same problem. Changed the 2 o-ring in the oil cooler module. The problem solved! My suggestion is better you change the oi cooler module too, that thing get old and may leaking someday. And you can order the coolant reservoir on ebay for better price, same quality.

 

what year is your engine and what is mileage ?

 

I have 2009 cascadia with 2008 DD15 engine. This was happen around 860k miles