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GEARBOX horror story . . .

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Post Sat Feb 09, 2019 12:23 am
French Letter User avatar

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Location: Gold Coast Hinterland - Australia
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.

IMG_0330 copy.jpg
IMG_0330 copy.jpg (69.7 KiB) Viewed 432 times
RCZ MkII GT THP200 - The pert Aussie/French waitress.

Post Sat Feb 09, 2019 1:24 am
French Letter User avatar

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Location: Gold Coast Hinterland - Australia
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.
Last edited by French Letter on Sat Feb 09, 2019 3:09 am, edited 2 times in total.
RCZ MkII GT THP200 - The pert Aussie/French waitress.

Post Sat Feb 09, 2019 1:42 am
stewartwillsher User avatar

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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.
Vesti La Giubba!
Fun: "La Gata Negra" - All black (Haria) 2.0 HDI 2014 Swiss spec fully loaded.
Runabout: "Purple People Eater" - Purple 108 1.2 PureTech 2016 Top fully loaded.
Workhorse: "Ounce" - White Jag X-Type Estate 2.2D 2009 Executive auto.
Sack shifter: "Animal" - Dirty Linhai 300 4x4 ATV 2007.

Post Sat Feb 09, 2019 2:50 am
French Letter User avatar

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Posts: 146
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Location: Gold Coast Hinterland - Australia
Well, well. Then my Red Line theory might be true.

Very interesting.

Two litres for about forty quid.

https://www.ebay.co.uk/itm/2-x-Red-Line ... :rk:4:pf:0

Be rest assured now, I'll do a Red Line tranny oil change on the RCZ in the next few weeks.

If anyone wants help to do themselves, then just holla!

or, check this out:

https://www.youtube.com/watch?v=isGgD9wb7-w
RCZ MkII GT THP200 - The pert Aussie/French waitress.


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