Primary oil

Discussion in 'Oil' started by jims87flh, May 8, 2009.

  1. jims87flh

    jims87flh Banned

    I use regular old HD primary oil, my mechanic feels that if that's what you've been running, and your seals are used to, then that's what you should stick with. Also since you can never get all the oil out, is there a concern with the oils mixing and increasing sludge?