Diesel Fuel Injection System Help Desk

[Dieseldude]

Dieseldud, question regarding euro4 diesel.

I've read somewhere before that using this diesel will shrink the seals of the injection pump of the older vehicles. This will obviously need repairing. But after repairing, will the new seals be able to handle ULSD already?

Thanks

I haven't studied the pros and cons of using ultra low sulfur diesel.

Excessive mix ratio of bio fuel with diesel can damage rubber reals.