At 10:33 AM 2/10/97 -0600, you wrote:
>Kdoc111@aol.com wrote:
>>
>> Not to beat a dead horse again, but a good TR6 friend called Castrol and
>> Valvoline about using GL-5 with brass. Both hotines told him that their new
>> gear oils were corrosive to brass. Is this the final word, or didn't someone
>> write the list saying that only overheating the new lube causes corrosion?
>>
>> I'm now confused, frustrated and don't want to take apart my trunions again!
>>
>> Any info would be appreciated.
>>
>> Kevin D. O'Connor
>
>Kevin:
>
>I'm beginning to share your frustration. Now, to make matters worse,
>there are some products out there that state on the container "exceeds
>GL-5 requirements, and is non-corrosive for bronze and other non-ferrous
>metals." TRF continues to point out that Castrol Hypoy C (GL-4) is the
>way to go, and sells the product; if you look at a Castrol Hypoy C
>bottle at your favorite parts house, it says meets or exceeds GL-5. So,
>I assume TRF is selling a GL-4 formula no longer commonly stocked by
>most outlets.
>
>I've also heard that many of the synthetics meeting GL-5 do not cause
>the same type of problems as the non-synthetic counterparts. Some of
>the "synthetic blend" gear oils even claim this, now. I think Valvoline
>is one, but it's been a while since I looked.
>
>Based purely on some good results a racing buddy of mine has had, I
>recently changed out my gearbox lube to the Slick 50 product (80W90).
>But of course there are many that don't think much of Slick 50, either.
>So...
>
>I'll be interested to see where this discussion goes. Maybe I'll drain
>and refill again.
>--
>Martin Libhart
>1972 TR6 (driver)
>1970 Spitfire Mk.3 (under restoration)
>
>Ater my TR6 tranny was rebuit I found Sta Lube GL-4 at PeP Boys! Much
cheaper than TRF.
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