Topic: 1947 Fan Assembly Hypoid Oil ???


hickok    -- 04-18-2020 @ 7:26 AM
  Hello All,
I need to refill my fan assembly on my 47 Mercury with Hypoid gear oil. My local auto parts shrugs their shoulders... I do not want to assume 140 non synthetic.... What say you all???

Thanks, ocHcikok




carcrazy    -- 04-18-2020 @ 12:19 PM
  Do you know that you need to use hypoid oil in your fan assembly? If you do, you can use the gear oil used in many hypoid differentials. It is identified as an API GL-5 lubricant. Many rear axles used this with an SAE 80W-90 viscosity rating which should be available at your local auto parts store.


42wagon    -- 04-19-2020 @ 3:29 AM
  The 1942 0wners manual says for the fan assembly add 1 oz of number 20 engine oil and turn the housing to drain out the surplus. I would assumed the same instruction would be correct for the 1947 fan assembly.


hickok    -- 04-19-2020 @ 5:42 AM
  Yes, The manual says, HYPOID oil For the 1947 Fan Assembly. Thanks for the input CarCrazy...! And 42Wagon.

This message was edited by hickok on 4-19-20 @ 5:46 AM


39 Ken    -- 04-19-2020 @ 6:27 AM
  Ford originally recommended regular motor oil when this fan assembly was introduced in 1942, but changed that later to 85-90 weight gear oil because the regular motor was too thin and would not last in the hub. The same oil used in your transmission will suffice for your fan hub.
Ken


51woodie    -- 04-19-2020 @ 6:29 AM
  I looked in three of my manuals, and came up with three different specs. I have a stock "46 Coupe, and based on umpteen opinions on the various forums, I decided to go with HD30 for my fan lube. Right or wrong, it works for me...so far. Attached are snaps from the three manuals I referenced, and I underlined the spec's that Ford gave at the time of printing.


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