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Join Date: Dec 2008
Location: Wilmette, IL
Posts: 99
Gear oil

I am aware that some folks are using Mobil Delvac 1 Synthetic 75w90 SHC Gear Lube what is your feedback on it?

Is anybody using Redline synthetic gear lube or anything else?

Oh, this is for a G50

Thanks!

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1987 Targa just about to hit 29k
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Old 10-11-2009, 06:50 PM
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3.4 Bigger is better
 
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Join Date: Nov 2003
Location: South Dakota
Posts: 1,497
I have used the flaps Mobil 1 gear lube and put in the Mobil Delvac 1 a few months ago with great results. This is what Porsche uses for factory fill on their race prepped cars. I have replaced the fluid every two years for the last 6 years. Overkill probably...

Just make sure the you can get the fill plug out before the drain plug
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Michael


88 911 Diamond Blue CE Carrera 3.4 HC3.4 member
2020 Honda Passport

Last edited by 88-diamondblue; 10-11-2009 at 07:14 PM..
Old 10-11-2009, 07:11 PM
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Join Date: Dec 2003
Location: TN
Posts: 20,853
Garage
I replaced my lube with Redline for LSDs. I found it was harder to shift from first to second when the trans was "cold". After a minute or two it is better. This could be the Redline or maybe the PO was using a combo of LSD and non-LSD to get easier shifting. Bottom line is that now that it's time to change it out, I'm going to try something else.
p.s. Do a search and you will find a wealth of info on this topic. Just be sure you are using 75/90 synthetic for your G50 trans.
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Joe
See Porsche run. Run, Porsche, Run: `87 911 Carrera
Old 10-11-2009, 07:18 PM
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Join Date: May 2009
Location: Montreal,Canada
Posts: 3,176
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I'm using Quaker State 75W140 full synthetic gear oil in my 89 G50 Coupe and i like the
results as compared to 75W90 oil...Once the oil warms up it shifts way smoother !!!

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Phil

89 Coupe,Black,95 3.6 engine and the list goes on ...
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Old 10-11-2009, 07:42 PM
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