The Ford Barn

fordmerc7 · 04-25-2016, 12:46 PM

what happened if 30 wt oil is in transmission case?

JSeery · 04-25-2016, 02:17 PM

That's approximately equal to 80W to 85W gear oil. The issue is motor oil does not have the additives that are included in gear oil. If it is changed fairly frequently you can get away with it, but it would be better to add gear oil sometime in the future. GL4 would be good.

Note: I assumed that you are referring to it being deliberately added to the transmission, there is no way oil from the engine could get into the transmission by accident!

fordmerc7 · 04-25-2016, 03:17 PM

Addition by presumed ignorance

JSeery · 04-25-2016, 03:26 PM

LOL, good answer!

cmbrucew · 04-25-2016, 03:31 PM

There is a "tractor oil" that is used for transmission and hydraulic both. Common tank.
Bruce

rotorwrench · 04-25-2016, 03:53 PM

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Modern hydraulic oils are usable for lubricants. My lathe uses Mobil GTE 24 & 26 for the gear head and apron respectively. I wouldn't use them in an old Ford though. They are too thin and would leak all over the place. I would go for Aeroshell 100 mineral though. It is equivalent to SAE 90 GL-1 since it is equivalent to SAE 50 motor oil. AS you can see from the chart above. Motor oils are graded differently for viscosity than gear lubricants. Any oil is better than none but the thin stuff won't stay inside very well unless it is very cold outside.

04-25-2016, 12:46 PM	#1
fordmerc7 Member Join Date: Sep 2015 Posts: 47	30 wt oil in transmission what happened if 30 wt oil is in transmission case?

04-25-2016, 03:17 PM	#3
fordmerc7 Member Join Date: Sep 2015 Posts: 47	Re: 30 wt oil in transmission Addition by presumed ignorance

04-25-2016, 03:26 PM	#4
JSeery Member Emeritus Join Date: Nov 2012 Location: Wichita KS Posts: 16,132	Re: 30 wt oil in transmission LOL, good answer!

04-25-2016, 03:31 PM	#5
cmbrucew Senior Member Join Date: Dec 2010 Location: North of sandy ago, CA. Posts: 2,064	Re: 30 wt oil in transmission There is a "tractor oil" that is used for transmission and hydraulic both. Common tank. Bruce __________________ Works good Lasts long time

04-25-2016, 03:53 PM	#6
rotorwrench Senior Member Join Date: Jun 2010 Location: San Antonio, Texas Posts: 16,464	Re: 30 wt oil in transmission Sponsored Links (Register now to hide all advertisements) Modern hydraulic oils are usable for lubricants. My lathe uses Mobil GTE 24 & 26 for the gear head and apron respectively. I wouldn't use them in an old Ford though. They are too thin and would leak all over the place. I would go for Aeroshell 100 mineral though. It is equivalent to SAE 90 GL-1 since it is equivalent to SAE 50 motor oil. AS you can see from the chart above. Motor oils are graded differently for viscosity than gear lubricants. Any oil is better than none but the thin stuff won't stay inside very well unless it is very cold outside.