Quote:
Originally Posted by GregMN
Thank you all for your concern. I was kind of expecting that...
I have communicated with a member that has 50k + on WVO on a 2005 CDI. There are many common rail diesel engines that have been running on WVO for multiple 100's of thousands of miles. Earlier Sprinter vans have been running WVO for years as have been VW TDI's, all at 20,000 + PSI. And, yes, the key to longevity is the quality of the fuel and the operator of the system (don't run it cold, completely purge the system before shut down).
Back to the ML...
It has had the turbo seals replaced and the servomotor replaced.
He is not sure if the oil cooler seals have been replaced.
Does anyone know if the failure of the seals is evident by visual inspection ?
What fluid leaks ? Oil, coolant, or both ? Can the failure cause a mixing of the oil into the coolant or the coolant into the oil ?
Thanks,
Greg
|
The symptom of the oil cooler seals is an oil leak in the V of the engine block. I believe the oil typically runs out the front of the engine, so you get oil spotting near the front of the car. I've not heard of oil/coolant mixing, my understanding is it's strictly an oil leak. The owner would probably know if he had this repair performed, as either the ML would be leaking onto his garage floor, or he would certainly remember the bill!
By turbo seals, does he mean the intake seal which tends to leak oil onto the servo motor? That part has apparently been updated 3 or more times. The turbo itself shouldn't need any service at 125K.
I presume you know the pricing of injectors and other components in the CDi system? Running WVO in one strikes me as a much bigger financial gamble than the IDI engines. The CDi is both less tolerant of fuel impurities and much more expensive to repair.