Re: 3 Speed trans oil 90W?
Sta-lube makes a gl-4 gear oil, Sold at napa, gl-4 is reccomended in the service manual. not sure whats the difference is but I used it just to be safe after I read gl-5 could attack brass parts.
http://www.napaonline.com/Catalog/Ca...229_0006410049
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1963 Fleet Side cab, Converted Fleet Side Barden bumper, Step Side in the middle.
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