Don, I don't know how you would calculate a viscosity or performance number out of such mixing. However, the manual with my '91 camper does say it is ok to mix oils of different weights, so long as use oil that is within the range specified for a given temperature regime. I have never seen such an ok in any other car manual other than my VW Vanagon GL Campmobile. mcneely ---- Don Hanson <dhanson928@GMAIL.COM> wrote: > If you were to mix 20w 50 weight with say..5w 30, would you expect an end > viscosity somewhere proportionate to how the ratios were 'blended'? I > inherited a bunch of oil, mostly pretty light weights...like maybe 5 cases, > ranging from 10w to 10-40 and straight 20 and 30w. I like to run about 15w > 40w in my inline Jetta motored van and I change it out at 3000 (+/-) > miles...With all this light weight oil kicking around, I would like to just > buy some heavy oil and mix in a quart or two of the lighter free stuff...Use > it up... > Acceptable? > Don Hanson -- David McNeely |
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