 | Home > Maintenance & Modifications > Blue/Green fluid at gearbox/transfer box joint? |
 
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| Dinnu Member Since: 24 Dec 2019 Location: Lija Posts: 3234   
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The Millers oil I used that went into my gearbox was normal golden colour. The oil that came out was just a darker shade of gold.
Could it be diesel? There are 2 pipes clipped to the underside of the seat box that cross from the fuel filter to the fuel cooler. 1988 90 Hard Top, 19J Diesel Turbo, Shire Blue - Restoration ongoing 2012 90 CSW, 2.2TDCI, Santorini Black |
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8th Oct 2022 10:32am |
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| Co1 Member Since: 19 Aug 2018 Location: North Yorkshire Posts: 3628  
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Cheers Dinnu. It’s thicker than diesel, viscosity wise it feels almost thicker than engine oil as well.
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8th Oct 2022 10:50am |
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| I Like Old Skool Member Since: 23 Feb 2015 Location: Manchester Posts: 777 
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Could be diesel, but you would smell it and it looks too green. Looks a lot like antifreeze/coolant to me but not sure how it would be getting that far back? How is the coolant level?
Even if coolant was leaking from the back of the head/headgasket it is still some way for it to get to the back of the gearbox, unless it is tracking along a wire or cable. |
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8th Oct 2022 10:56am |
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| Co1 Member Since: 19 Aug 2018 Location: North Yorkshire Posts: 3628
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Yeah, I was thinking coolant or similar as well but again it feels a bit too thick. Might be wrong though, I’ll check what colour it is in the reservoir.
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8th Oct 2022 11:01am |
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| Ianh Member Since: 17 Sep 2018 Location: Essex Posts: 1842
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If coolant has not been changed from factory it should be orange, if changed it should be orange or red if correct fluid used.
Worth noting that some corrosion on non ferrous metals can turn fluids a green or blue green colour if the fluid is settled on it for a while. So like others I suspect that green ( looks more blue in pic) fluid has come from above and may not have started green but mixed with some corrosion has turned that colour and then run off. Ps in your pic it does look like it’s come from above as at the bottom of that flanged bolt it looks like some fluid of the same colour is there as well. Last edited by Ianh on 8th Oct 2022 11:25am. Edited 1 time in total |
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8th Oct 2022 11:19am |
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| Co1 Member Since: 19 Aug 2018 Location: North Yorkshire Posts: 3628
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Coolant is red.
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8th Oct 2022 11:19am |
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| Ianh Member Since: 17 Sep 2018 Location: Essex Posts: 1842
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Have you lost any coolant? Your EGR cooler and associated coolant pipes are at the very back of the engine.
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8th Oct 2022 11:50am |
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| Co1 Member Since: 19 Aug 2018 Location: North Yorkshire Posts: 3628
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Have had a good look around and can’t see anything coming from above. As I reach around the gearbox and transfer box there is no dampness, only dust so it doesn’t look to be coming from above. There is evidence inside the tell tale at this junction, although that could just be capillary action is suppose.
Thoughts? Transfer box input seal or gearbox output seal? Cheers Col |
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8th Oct 2022 11:52am |
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| Dinnu Member Since: 24 Dec 2019 Location: Lija Posts: 3234
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Could drain a few drips of oil out of the gearbox or transfer case to see that the oil is not green there? 1988 90 Hard Top, 19J Diesel Turbo, Shire Blue - Restoration ongoing
2012 90 CSW, 2.2TDCI, Santorini Black |
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8th Oct 2022 12:48pm |
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| piechipsandpeas Member Since: 12 May 2021 Location: Albany, Western Australia Posts: 178  
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Probably one of the two. Try a smell test. Remove the gearbox and transfer case fill plugs and see which one the leaking fluid smells like, they should be different and have distinctive odours.
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8th Oct 2022 12:56pm |
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| swt Member Since: 24 Aug 2018 Location: Cumbria Posts: 149 
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I've used oil additives that were sufficiently dark to stain a whole gearbox worth of golden-coloured oil a different colour. I'd go for Dinnu's suggestion: it's quick and easy to dip into the gearbox and colour match your leak with the contents.
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8th Oct 2022 1:55pm |
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| Co1 Member Since: 19 Aug 2018 Location: North Yorkshire Posts: 3628
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Drained a bit off the gearbox, it looks like normal oil but has the slightest hint of green in it! I’ve degrease and cleaned off the whole area so I’ll give it a week and check again. Just weighing up if I have to split the transfer box off to replace a seal, should I re fit with a Winchester Gears ATB LT230?! Will make it a bloody expensive oil seal change!!
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8th Oct 2022 2:01pm |
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| Dinnu Member Since: 24 Dec 2019 Location: Lija Posts: 3234
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When I got my Puma I had a bad leak from the adaptor housing. It had the ashcroft adapter shaft, but the shaft cover was cross threaded and the O rings on the ashcroft adapter shaft did not seal properly. 1988 90 Hard Top, 19J Diesel Turbo, Shire Blue - Restoration ongoing
2012 90 CSW, 2.2TDCI, Santorini Black |
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8th Oct 2022 3:01pm |
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| Co1 Member Since: 19 Aug 2018 Location: North Yorkshire Posts: 3628
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I’m heading towards 95k miles, so if it is an oil seal I suppose it’s done pretty well compared with some of the horror stories out there.
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8th Oct 2022 3:45pm |
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