Gear Oil 80W-90

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In case of Gear Oil 80W-90, If i am getting pour point -27 only by adding 0.3% pour point depressant then Why more pour point depressant
( about 1.0%) is used in 80W-90, is it plays any role in Brookfield viscosity

11/3/078:10 AM

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bruce381Member

using "extra" PPD will help the Brookfield viscosity and will raise the vis like a VII.
bruce

11/4/0711:14 AM

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tempestMember

Any down sides to adding more PPD, Bruce?

11/5/072:12 PM

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nnkmenonMember

PPD is not a cheap additive.Its cost is very high.I think,extra PPD can enhance the CCS viscosity also.

11/14/072:45 AM

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