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Synthetic in Pumpkins?

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Old Jan 20, 2004 | 11:26 AM
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Dan Ward
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Synthetic in Pumpkins?

A mechanic told me he always puts synthetic gear oil in his front and rear pumpkins up here in MN. The reasoning was that there is no way to heat them up and in freezing weather the synthetics do a better job of lubricating the gears. Is there a Ford approved synthetic for front and rear end? Any thoughts or experiences?

Thanks - Dan Ward
 
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Old Jan 20, 2004 | 12:29 PM
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Yes there is for most rears, I am not sure about the front.
 
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Old Jan 20, 2004 | 01:18 PM
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Ford spec's synthetic for the rear and the front. Royal Purple makes an 85w140 synthetic for the rear and a 75w90 synthetic for the front (about 10.00 per quart) or mobil makes a synthetic equivalent for both (8 to 16.00 per quart)
 
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Old Jan 20, 2004 | 03:14 PM
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I've got Redline synthetic in both pumpkins: 75W90 in the front, and 85W140 in the rear.
 
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Old Jan 20, 2004 | 05:49 PM
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i just changed my gear oil over the weekend and i put the ford synthetic 75w140 in the rear, wish i didnt cause thier price for the oil raped my wallet, and so for the front i bought a synthetic oil 75w90 GL-4 made by pennzoil, and the price was decent, i hope the oil will be ok. i asked my mechanic about syn. in the front and he said its a good idea because the front diff runs colder than the rear so the syn oil will help it engage easier, so i went with what he said, makes sense. anyways that is what i did.

later
 
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Old Jan 22, 2004 | 10:16 AM
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CLK - or anyone in the know

Your post indicates that Ford specifies synthetic. Does that mean synthetic came from the factory in front and rear end with my 2000 PSD EX 4X4??

Dan Ward
 
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Old Jan 22, 2004 | 11:29 AM
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That depends. My rear diff had a metal stamped label indicating that it came with synthetic...
 
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Old Jan 22, 2004 | 02:43 PM
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Yes, all of thr rearends that come from ford (sterling) in the last 4 or 5 years came with synthetic , they say it has a 100000 mile service but I wouldnt go that far maybe half
 
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Old Jan 22, 2004 | 02:45 PM
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Forgot the second half of my mesage. The front ends I am not sure of but I have 75w90 synthetic in the front abd 85w140 in the rear
 
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Old Jan 23, 2004 | 09:10 AM
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I have Amsoil 75w140 in the rear pumpkin,and 75w90 in the front.
 
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