Delvac 1 + Mobil 1

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Nov 16, 2002
Are Mobil 1 and Delvac 1 compatible? I'd like to mix these two. I have a 5qt jug from walmart I bought for $18 and I have 2gallons of D1 I have yet to use. I'd like to add the Delvac 1 to M1 for some extra cleaning power.
Without getting into the basketball, golf ball thing, would there be a problem with D1 having a different base oil? Does it have a different base oil?
PAO's are one part of each oil's base. Delvac 1 uses TMP and PE polyol esters. M1 SS uses TME esters. Delvac 1 has a higher percentage of AW additives such as Boron, and ZDDP. Delvac also has a better Detergent-Dispersant package for HD use. M1 has higher FM additives, but a good set of AW adds (Moly, ZDDP, Boron) but at a lower level. Actually, I would think they would complement each other. I see no problems with mixing the two. PS. If the M1 SS is 10W30 and the Delvac 1 is 5W40, expect a slightly different viscosity, such as an 8W35. [ June 05, 2003, 11:07 PM: Message edited by: MolaKule ]
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