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TOPIC: LSD additive and 75w90 recommendations

LSD additive and 75w90 recommendations 15 Apr 2014 22:07 #17053


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  • BlackPearl's Avatar
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Hello all,

I posted this up over on Pelican, I'd really like some helpful advise.
I am wanting to change the manual trans/diff oil in my 83s.

It has the optional LSD but with it only being 40% lock up is the additive needed?

I think I'd rather stick with conventional oil, Valvoline seems to make the only conventional 75w90. What are you guys using?

Thanks!
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LSD additive and 75w90 recommendations 16 Apr 2014 10:45 #17055


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Lots of variables involved...

You can actually just use the non-additive oil and see what happens. If you get grumbling, growling or shuddering, just put in a bit of additive and drive. If the growling or shuddering continues, put in more additive.

I use the Mobil 1 synthetic.
Wally Plumley
928 Specialists
www.928gt.com
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LSD additive and 75w90 recommendations 24 Apr 2014 11:37 #17097


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Hi, I've been using Mobil 1 75/90 synthetic in my 1985 manual w/ LSD for years w/o any issues.

Dave
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LSD additive and 75w90 recommendations 28 Apr 2014 20:23 #17125


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when I ever get back into my house and get my car, ill be changing mine so please post your findings
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LSD additive and 75w90 recommendations 28 Apr 2014 21:41 #17132

Mobil 1 75w90 in my 5 speed GTS......good stuff
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