I was going to run a tank of biodiesel just as a test. The car has 200k, but is still in great shape. Can anyone tell me what type of orings are in it? How do I know if I have the viton orings?
I have read some people used biodiesel and ended up with a lot of fuel leaks. I have found a biodiesel outlet here in central North Carolina that has B100 biodiesel. All suggestions, comments, and recommendations are welcome.
Thanks in advance

Unless you have changed them out yourself to viton yours will all be Nitrile(buna) rubber.

The o-rings are affected by age, heat and changes in the aromatic additives used in LSD vs ULSD. If they are going to leak they just are; you're not going to do too much to speed that up or slow it down. Some have suggested going back and forth between bio and D2 is a contributor??? Difficult to know or to prove.

Viton is "said" to be more resistant; time will tell if that is true or not.

My DV's leaked ~3 mos after ULSD came out in CA. Have been slowly swapping everything over to viton.

I've burned lots of B99 in mine as ahve many others. Runs fine, although I personally seem to get ~10% less mpg vs D2.

__________________
Terry Allison
N. Calif. & Boca Chica, Panama

09' E320 Bluetec 77k (USA)
09' Hyundai Santa Fe Diesel 48k (S.A.)

Is this place anywhere near North Charlotte, Concord area? Any details would be appreciated

Thanks
I am going to try some. Right now I need to change the trans fluid and filter.

This is in High Point, NC.

Is there something that tells where these are on the engine?

Folow the leaks back to the leaky o-rings

Just about anything rubber that contacts biodiesel is susceptible. Hoses are easy to find and fairly easy to replace. More difficult are delivery valve seals. The OM606 might have other esoteric seals.

Sixto
93 300SD 3.0

Like Sixto suggested, clean it up with your cleaner of choice, run it a bit and follow them back to the source.

On the 606.910, 911 & 962, every plastic fuel line has an o-ring on each end. There is also one under the pre-filter, behind the shutoff valve and 6 at the IP delivery valves. The 910 & some 911's have one or two more on the shut off/kill switch button on top of the fuel filter housing while all 962's and other 911's have a bolt at that location.

The DV orings and crush washers are the same part numebrs as ALL other 60x engines.

__________________
Terry Allison
N. Calif. & Boca Chica, Panama

09' E320 Bluetec 77k (USA)
09' Hyundai Santa Fe Diesel 48k (S.A.)