Forum Discussion

Geocritter's avatar
Geocritter
Explorer
Nov 07, 2013

Using diesel-formulated motor oil in my 2-wheeled RV

There are some very smart and technically knowledgeable people on this board, so I hope it’s okay to ask a question that’s evolved from a personal sized 2-wheel RV I recently purchased. The machine requires 10W40 to 20W50 motor oil which is danged hard to find in affordable places like Wal-Mart, except for motor oil formulated for diesel engines. Would I be risking eventual problems with my 2-wheeled RV by using 20W50 diesel-formulated oil in its gasoline powered engine?

It has a comparatively high-reving single cylinder 4-valve DOHC engine which is what has me worried.

Steve

33 Replies

Show More
  • gbopp's avatar
    gbopp
    Explorer
    Nov 07, 2013
    Instead of being vague, why not give us the make/model, etc. of your 2 wheeled RV.
    Maybe someone has one and can give you more accurate information.

    I think Chris Bryant gave you good information.

    And I agree with dan-nickie, find a forum spceific to your 2 wheeled RV. They would know any quirks wirh your RV.
  • Chris_Bryant's avatar
    Chris_Bryant
    Explorer II
    Nov 07, 2013
    *If* it has the correct API rating (or higher), which it probably does, it will be fine. I just looked at the bottle of Rotella I have and it is rated SM.
    If it doesn't have an "S" rating, I wouldn't.
  • dan-nickie's avatar
    dan-nickie
    Explorer
    Nov 07, 2013
    I have no idea what your 2 wheel RV is.
    But lots of motorcycle owners use Rotella T including me.
    I would suggest finding a forum specific to your 2 wheel RV and ask there.

About Technical Issues

Having RV issues? Connect with others who have been in your shoes.24,262 PostsLatest Activity: Jun 12, 2025