Ferrari Mailing List: Re: 308 mileage

[Hans E. Hansen (FList]

I think that each individual gearbox will require some experimentation.
What works well in one may not in another.

But that said......

Jeff's comment about using MT-90 instead of MTL could
possibly aggrevate syncro issues.  The syncros work better
with thinner oil.  That's why (in general) most of these cars
shift better after you've just run the piss out of them -- the
oil has warmed up and gotten thinner.

Hans.

On 10/19/07, Jeff Greenfield <coyote [at] acme-ltd.com> wrote:
> Interesting ... I was told by at least two different people at Redline
> that the 308 required a GL-5 (hypoid) gear oil. (I now assume that
> this is because Ferrari specified a GL-5 oil in the first place)
>
> Since then I've been using their 75w90 NS with just enough friction
> Modifier to keep the LSD happy and it has been working well for me.
>
> Although I think if i were going to use a  GL-4 oil, I'd probably use
> their MT-90 (basically a heavier version of the MTL).
>
> But, hey what do I know ...
>
> Jeff
>