Pagoda SL Group

W113 Pagoda SL Group => Drive train, fuel, suspension, steering & brakes => Topic started by: rogerh113 on August 06, 2025, 01:23:02

Title: Hypoid b differential oil
Post by: rogerh113 on August 06, 2025, 01:23:02

Anyone have a suggestion for a good hypoid b available in the USA ???

thanks -- Roger

Title: Re: Hypoid b differential oil
Post by: TJMart on August 07, 2025, 18:27:58

Roger,

I have had very good success with Red Line Synthetic 75W140 NS.

Tony

Title: Re: Hypoid b differential oil
Post by: MartinK on August 07, 2025, 20:06:03

Hei.

Please do not use SAE140. The final drive recommends SAE90 and nowadays we use multigrade oil like 75W-90.

You may check mercedes-benz operating fluids. The final drive needs API GL5 hypoid. 235.0 is not longer supported and most current hypoid gear oils are fully synthetic, see current sheet 235.9

If you have a problem with your final gear drive with the recommended oil grade and quality (noise, heat, leakage) it is not a matter of oil.

For example you can use Mobil1 syn gear 75w-90 or comparable products from Shell, Castrol, whatever.

Talk soon, Martin

Title: Re: Hypoid b differential oil
Post by: rogerh113 on August 09, 2025, 14:34:27

Thanks very much for the information and suggestions.  I went ahead and got some actual mineral oil hypoid 80-90 that met the performance spec.  Thought I would go ahead and put some original type fluid in the differential.