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Daniel Wilson
Daniel Wilson,
Category: Medium and Heavy Trucks
Satisfied Customers: 5293
Experience:  Owner at DJ Wilson
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What weight of transmission gear oil is needed 1990 rd690s

Customer Question

what weight of transmission gear oil is needed for a 1990 rd690s mack truck with e6 300 hp engine
Submitted: 1 year ago.
Category: Medium and Heavy Trucks
Expert:  Daniel Wilson replied 1 year ago.

Hi Ron, My name is***** will be glad to help What transmission is in your truck? Also check the color of the drain oil and for a tag whether synthetic is recommended, The Mack transmissions call for 75w 90 but 80w90 is perfectly fine to use. Click on this link for the specs.

Oils Mack

Expert:  Daniel Wilson replied 1 year ago.

Hi, Did you get this resolved?

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