'78 Spider update: Changed gearbox/diff. lube...

[JeffreyOlson@domain.elided]

I can't believe this thing stayed together and ran as 
well as it did based on the P.O.'s total disregard for 
routine service!

Gearbox and diff. lubes were absolutely filthy with a 
nice deposit of fine metal shavings left on the magnetic 
drain plugs for both.  Each only full to about 1/2 
capacity with some nasty funky goose grease!

Surprisingly the gearbox shifts well in all gears even 
when cold and is quiet and smooth.

I used Redline MTL in the gearbox and Redline 75W90 in 
the differential.  I've used the same combination in 
several old BMW 5-series with great success.

The gearbox now seems a little smoother and synchronizer 
action is improved very slightly.  Upshifts and 
downshifts don't seem to require quite as 
much 'technique' and can happen a little faster.

So far, no leaks or complaints!

PS  I changed the 24-year old Spica pump oil filter and 
the old one disintegrated on removal!

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