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1990 Volvo 240 Question: Is GL-5,MT-1 75W90 gear oil suitable for use in a 1960 Volvo M4 trans and diff.

 

Question

zoneman, 2.3L 4 Cylinder, Loveland, OH, September 28, 2011, 08:29
 Rookie

Year selection does not cover 1960. The model of the vehicle is Volvo PV 544.

Once again, the vehicle is a 1960 Volvo PV 544.

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  • Answer #1

    Bret Bodas from RepairPal Test Shop, October 04, 2011, 08:50
     Master

    Hey,
    Great car, I love those 544's. However I'm much better suited to answer questions about newer Volvo's. My suggestion is to check out some of the Volvo specific forums. My guess is you'll be OK, but it's a guess. Good Luck!

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    zoneman, October 04, 2011, 09:13
     Rookie

    Bret, I found out that GL-5 contains an ingredient that is harmful to the brass and bronze parts in the tranny mainly syncronizers and bushings. GL-4 is the correct lube to use in the gearbox, I'm going to use REDLINE MTL, it happens to be a synthetic. The GL-5 is apparently OK for the differential.
    Thanks for the response.
    Zoneman

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