Dave,
I would drain that stuff :-)
EP (extreme pressure) or GL-5 rated oils are normally agressive.
Special synthetics such as Redline MTL or SAE90 are GL-5 rated, but they
say that they use more modern formulations that are not as agressive and
can be used in transmission for which non-EP GL-1 through 4 are specified.
So they could PROBABLY be used in our trannies.
Based on this info (that I read on the Redline web page), I would NOT use
a GL-5 or EP rated gear oil in an early Spridget trans. 1500s are
different.
Ulix
On Fri, 18 Dec 1998, Dave Vrba wrote:
> Hello listers,
>
> I'm very concerned. I have been following the thread about fluids
> over the last few days and there seems to be a question about using
> 80w90 gear oil in LBC trannies. Damage could result???
>
> I AM using Valvoline 80w90 High Performance gear oil in the rear end
> AND the tranny on my '62 A/H Sprite MKII for about six months now. I
> did this based on information I got from an MG web site (don't shoot
> me) from the UK. The Cambridge District MG Division Owners Club tips
> page. Check it out.
>
> http://www.mgcars.org.uk/cambs.mgoc/tips.htm
>
> then click on "T-Series Lubrication"
>
> -----------------------------------------------------------------
> Just a clip of the verbiage from this location.....
>
> "The gearbox oil should be checked each 1000 miles and topped up to
> the "High" mark. It should be drained and refilled every 6000 miles.
> The recommended gearbox lubricant is an extreme pressure "EP" gear oil
> of 90 weight such as Castrol Hypoy C Gear Oil (SAE 80W90)
>
> The rear axle lubricant should be checked every 1000 miles, also
> changed every 6000 miles, with the same oil as the gearbox. It should
> be filled to the level of the square-headed filler plug on the right
> front of the differential housing, just behind the rear universal
> joint. When changing the oil, be sure to clean the hollow center of
> the drain plug before it is replaced and tightened. ( Be sure to check
> this plug for tightness. A lost plug can spell disaster!!! )"
>
> ---------------------------------------------------------------
> Naturally, this is one opinion or point of view and it clearly states
> to use the same oil in both locations. However, I do not want my
> syncros to be attacked and disintegrated.
>
> I have asked Valvoline, via their web site, if harm to our trannies
> will happen if we use their product there. I am anxiously awaiting
> their answer. I'll post what I get back.
>
> Should I immediately drain my tranny and fill with something else?
> What??
>
> David L. Vrba
> Dublin, CA
> '62 Sprite MKII
> HAN6L14083
>
Ulix __/__,__
.......................................................... (_o____o_)....
'67 Sprite
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