Re: Transmission Oil and OD Tran Oil weight
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The 85W-140 gear oil you have should work well in the differential and transmission and overdrive. Just make sure it is GL-5 EP type oil or else the differential will object in a costly way. Many of us here prefer the 85W-140 gear oil for the differentials and transmissions in our Packards.
(o{}o)
Posted on: 2013/6/28 15:45
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And make happen What occupies our mind... (W. Scherer) |
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Re: Transmission Oil and OD Tran Oil weight
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Dear Dale
90w EP gear oil in the differential (GL-5) (85w-140 is fine) 140w non-EP in the trans - summer 90w non-EP in the trans - winter (if you drive it in the cold weather and snow alot) If you have not drained the trans oil yet take a sample and compare it to modern gear oil. If it does not have a strong smell then it probably is not EP and you want to try 140w non-EP available from lubriplate. If the trans oil is nice and clean I would save it and reuse it to avoid a possible shifting problem. (you can always take it back out).
Posted on: 2013/6/28 17:59
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Re: Transmission Oil and OD Tran Oil weight
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That's something I need to do on my 51. What is "EP"?
Posted on: 2013/6/28 18:49
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Re: Transmission Oil and OD Tran Oil weight
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Thanks but I am a little confused. One comment says use 85 140w "EP" and another one say not to use "EP" or am I a little slow? Please clarify. Thanks Dale
Posted on: 2013/6/28 19:31
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Re: Transmission Oil and OD Tran Oil weight
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EP stands for Extreme Pressure (additives). In a differential there is sliding action under extreme force so a special oil needed to be developed for Hypoid gears.
Old EP oils and greases are reactive to bronze synchronizers and so were not specified for the Packard transmission. In fact Bendix was very adamant that EP oil not be used in the overdrive. New EP oils usually satisfy the military spec MIL-2105 which sets a limit on reactivity. However lots of cars have been running around with EP oil in the transmissions for years so whatever damage there was to be done has already been done
Posted on: 2013/6/28 21:56
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Re: Transmission Oil and OD Tran Oil weight
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Thanks for the info I am a little "wiser" with my Packard now. My Uncle use to say. " a little knowledge is dangerous" I am off the the Parts store.
Posted on: 2013/6/29 6:41
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