BASE OIL INTERCHANGE GUIDELINES

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Pls let me know whether we should conduct the required tests whenever, we change the base oil sources/manufacture,irrespective of the type of base stock as Gr1,Gr2 etc.... to meet various API stds like SL,SM,SN for gasoline categories an CH4,CI4,CI4Plus etc..for Diesel categories.I am asking about the interchangibility of the base stock.Example,if I am using Exxon Mobil base stock(Gr2) and want to replace it with another Gr2 base stock like GS Caltex.Is it really required to do these engine tests.

6/27/1310:00 AM

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Original Post

johnmMember

Menon,

Regarding your first question about interchanging G1 and G2 oils, it certainly could be some problems if you plan to additize this oil, because of their inheritly different solvency and ability to dissolve the additives and keep them in the final blend.

Interchanging G2 base oils should not be a problem if their viscosity, pour point, SG, VI, and Aniline Point are comparable/compatible.

However, if my guess is correct that you are talking about manufacturing/blending/marketing those products, it would be best to test new product for the sake of your company and the consumers. As I see it, it would be a small price to pay compared with expenses through possible lawsuits.

7/1/138:07 PM

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