Where is there yellow metal/ brass alloy in these diffs?
Sent from my iPhone
> On Apr 15, 2020, at 5:15 PM, Randall via Fot <fot@autox.team.net> wrote:
>
> You should probably check with Redline; but my understanding is that they
> do
> not use the sulfur/phosphorous additive that can damage yellow metal.
>
> According to the white paper at
> https://www.redlineoil.com/Content/files/tech/Gear%20Oil%20Tech%20Info.pdf
>
> "The extreme pressure chemistry used in many gear oils
> can be corrosive to brass and bronze used in synchronizers
> and bushings. Most gear oils are corrosive at
> temperatures of 200°F. Red Line Gear Oils are non-corrosive
> up to 300°F and the MTL® in excess of 375°F. A
> corrosive gear oil can shorten synchronizer life by half
> and can also contribute to rust problems."
>
> I don't have a link handy, but I was reading a research paper just the other
> day (published in SAE Transactions) about a "dispersed solid borate"
> additive that reportedly gave greatly reduced wear in big truck rear axles.
> One of the other Redline documents on their website mentions "solid
> microscopic particles", which could be the same thing (or not, just a WAG).
>
> -- Randall
>
>
> ckproof Gear OIl All Sythetic
>>
>> https://www.biesheuvel.nl/product/58204-75w250-heavy-shockproo
> f-gear-oil
>> In general GL5 has a higher sulfur content than GL4 has, but
>> surely GL4 does contain sulfur.
>
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