Posted by Janicholson on April 15, 2013 at 12:40:35 from (199.17.6.78):
For some definition on Low ash oil, I asked Shell Oil Co. to discuss the ash level in current oil
My question was:
>I participate in a forum at Yesterdays Tractors. IH “Farmall” has specified >Low ash oil for use in its gasoline engines from the early 1960s. We are in a >discussion as to whether the current Low ash diesel grade oils are of the same >intended (or unintended) ash levels. My family has been a consistent user of >Rotella Oils, and would like to be assured that if we used 15- 40 Rotella >diesel oil in a 706 Farmall gasoline tractor, that it would meet the same low >ash intentions as the IH branded oil from the dealer. >Dr. James A Nicholson, Technology Department St. Cloud State University, >janicholson@stcloudstate.edu
Their reply follows:
Dear Sir,
The information we have for the Farmall 706 (gasoline) indicates it called for an API SF low ash oil (max 0.5% ) for viscosity ranges of 10w, 30w, and 5w-30. No information on higher viscosity ranges is listed in our reference. Rotella T 15w-40 meets API SM specifications for gasoline engines, which covers API SF, but has a maximum ash content of 1%.
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