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GEARBOX horror story . . .

French Letter

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HORROR STORY.

In 2015, I foolishly went to a private Pug/Citroen mechanic to replace the clutch on the French Tart (207cc Sport THP150).

They drained the gearbox fluid in order to get at the bell housing, etc.

They did a crap job, with the clutch shuddering after the work was done, so I took it back and they did it right.

Yesterday, I decided to change the gearbox oil as I have done prior before the clutch replacement.

Used this stuff – recommended:
https://www.redlineoil.com/mt-90-75w90-gl-4-gear-oil

When I removed the drain plug, SHOCK, HORROR, about 100 mill of fluid came out!
It has never leaked since the clutch change, so the fools forgot to replace the fluid at clutch change time. That means the French Tart has done 50,000 kilometres with no fluid in the gearbox. :evil:

There was no metal filings or stuff on the drain plug thank goodness and as the car did only short runs during this period, the gears seem to be OK. Tough little Pug MA5 box. So, I refilled with two litres of fluid and took her for a spin. Yes, noise (a slight rumbling) from the front left had disappeared and the car pulls better in all gears and of course the gear change is much smoother.

I think I got away with it. I hate anyone working on my cars, but in this case, I had no choice.
 

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French Letter

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I have a hunch as to why the Tart's MA5 gearbox lasted well for 50K kilometres with no forkin' oil.

Short trips during that time and I had previously replaced the gearbox oil twice before with Red Line.

It may have been this oil, that coated the cogs so well. Red Line uses base stock jet turbine oil and works it from there . . .https://www.redlineoil.com/mt-90-75w90-gl-4-gear-oil

Oh well, go figure.
 

stewartwillsher

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Once upon a time, I guess in the late fifties and the sixties, my wise old father (an all round old school engineer) swore by an additive that contained:
https://en.wikipedia.org/wiki/Molybdenum_disulfide
It was claimed, but few tested it, that an engine or gearbox could be run "dry" providing it had previously been subjected to the treatment just using an additive.
 

French Letter

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Bobby D

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HORROR STORY.

In 2015, I foolishly went to a private Pug/Citroen mechanic to replace the clutch on the French Tart (207cc Sport THP150).

They drained the gearbox fluid in order to get at the bell housing, etc.

They did a crap job, with the clutch shuddering after the work was done, so I took it back and they did it right.

Yesterday, I decided to change the gearbox oil as I have done prior before the clutch replacement.

Used this stuff – recommended:
MT-90 75W90 GL-4 Gear Oil

When I removed the drain plug, SHOCK, HORROR, about 100 mill of fluid came out!
It has never leaked since the clutch change, so the fools forgot to replace the fluid at clutch change time. That means the French Tart has done 50,000 kilometres with no fluid in the gearbox. :evil:

There was no metal filings or stuff on the drain plug thank goodness and as the car did only short runs during this period, the gears seem to be OK. Tough little Pug MA5 box. So, I refilled with two litres of fluid and took her for a spin. Yes, noise (a slight rumbling) from the front left had disappeared and the car pulls better in all gears and of course the gear change is much smoother.

I think I got away with it. I hate anyone working on my cars, but in this case, I had no choice.
Nothing worse than having to pay someone for doing half a job!!
 

chrismac

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I have always added a tube of Molyslip to a gearbox whenever I acquired a new car or changed the Gearbox oil.
Best £10 ever spent.
 
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