Red Line makes a 75/90 oil for the diff with different properties, mostly
friction modifiers.
Mike
----- Original Message -----
From: <Geegc@aol.com>
To: <Ofarrell.Fergus@hitco.com>
Cc: <datsun-roadsters@autox.team.net>
Sent: Tuesday, February 12, 2002 12:11 AM
Subject: Re: gear oil question/warning/ more Qs
> So you think MT 90 is a bad idea, and recommend MTL, or just stay with
> regular ear oil? If so, what weight? The Chilton recommends 140 for 32
to
> 90 degrees, 90 for cooler temps. In LA, it is never that cold.
>
> How is the MT 90 working in the diff? Any leakage? What are you using in
> the steering box?
>
> Gary C
>
> In a message dated 2/11/02 4:55:45 PM Pacific Standard Time,
> Ofarrell.Fergus@hitco.com writes:
>
>
> > Hey Gary C,
> > you asked about gear oils, and the manual said 140W, and there was a
> > RedLine
> > answer, and I'm a little late but 'beware'. Read the Red Line site tech
> > info, because some of those RL synthetics are incompatible with elderly
> > synchro materials. You want MTL, (thanks for the info, Victor and Craig
> > Carter) and there is one other but I can't remember its' name. I bought
> > MT90 and then found it was only to be used in my diff. (oh, and the
> > RedLine
> > Oil website distributors list is a pile of @#$%. I think I got mine at
> > Balboa Auto Parts on the corner of Devonshire/Balboa)
> > Also, since my trans seals won't hold synthetic, (too thin) I thought
I'd
> > be
> > real clever and put in 140W, and now when I drive the first 2 miles is
> > second gear synchro grind zone, until the oil heat/thins up. Now I
gotta
> > drain and go back to 75-90W. You don't wanna know what your forearms
feel
> > like after pumping 4.6 pints of 140W thru a tube. Fergus O, 69 2000,
> > HB,CA.
>
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