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Discussion Starter #1
I just thought about something. I drained my rear axle fluid about 2000 miles ago, and put in fresh 80w90.
Should I have put some type of additive? I don't know if it is posi.....etc.
I don't know why, but it popped in my mind, when someone told me to add friction additive to my trucks rear end when changing the fluid.
1991 190E 2.6 OD
 

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I'm sure your is LSD when have OD on tranny , take a look to this Guy ::nono::nono::nono:
Most rear MB pumpkin loves to have 75w-140 or GL-5 ( Hypoid gear lube)Motul , Red line name like Amsoil SVO severe gear synthetic EP etc..
don't waste $$ & time to it .
 

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Discussion Starter #3
I'm sure your is LSD when have OD on tranny , take a look to this Guy ::nono::nono::nono:
Most rear MB pumpkin loves to have 75w-140 or GL-5 ( Hypoid gear lube)Motul , Red line name like Amsoil SVO severe gear synthetic EP etc..
don't waste $$ & time to it .
Okay, so no additive.
But I did wrong putting the 80w/90 in? I thought it did say GL5 on it though, but wrong weight?
 

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That's right it was just differ weight and it's industry standard on many pumpkin gears ( 75w-90 is standard for Manual trans and transaxle gear lube ), nothing wrong with it only when hypoid gear reach hi temp ( Long trip- racing-drifting etc.) lub become watering and long term it may not protects all fast heavy moving parts. Rear end gear are enclose and handling mucho weights on it when in motion or what I called : Extreme pressure.
You're OK for now until next 30K miles before change until then I wouldn't use additives.:thumbsup:
 

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That's right it was just differ weight and it's industry standard on many pumpkin gears ( 75w-90 is standard for Manual trans and transaxle gear lube ), nothing wrong with it only when hypoid gear reach hi temp ( Long trip- racing-drifting etc.) lub become watering and long term it may not protects all fast heavy moving parts. Rear end gear are enclose and handling mucho weights on it when in motion or what I called : Extreme pressure.
You're OK for now until next 30K miles before change until then I wouldn't use additives.:thumbsup:
I'll grab some 75w/140 this week. Its quick and easy. I would rather have the right weight in it. At least I know now that I don't need any type of special additives with the oil. Thanks for the info!
 
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