| gsimpson0701 | -- 07-13-2025 @ 5:54 PM |
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Iwas wondering if it is necesary to change Transmission fluid and rear axle fluids in my car? If so what type do you recommend?
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| carcrazy | -- 07-13-2025 @ 8:10 PM |
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It is good to change the oils in the transmission and rear axle every 10,000 miles or so. For the transmission you can use a GL-4 Gear Oil of SAE 90 weight. If you can't find a GL-4 Gear Oil, you can use NAPA GL-1 Gear Oil SAE 90 weight or Pennzoil Synchromesh Manual Transmission Fluid GL-3. For the rear axle you should use a GL-5 Extreme Pressure Gear Oil of SAE 90 weight. Do not use GL-5 oil in the synchromesh transmission as the sulphur in it will attack the copper, brass or bronze parts in the transmission.
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| same | -- 07-13-2025 @ 8:10 PM |
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gsimpson,yes change all fluids especially if you just got the car a dont know the history. in my '37 fordor eng oil -10w40 conventional at oreillys low cost cause its getting drained at or near 1 thousand miles no oil filter.plus 1/2 qt. marvel mystery oil. trans/GL4 gear oil also oreillys 85/140 wt. cause its hot in iowa same goes for differential. Tom.
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