Wednesday, 6 July 2016

Gearbox oil change DHC

Although the weather is slowly but surely improving, we haven't seen much summer so far. Though we can't complain about a lack of rain! And as a result the DHC hasn't seen much action so far. Actually I only drove her to a friend's workshop for its biennial MOT and back. And while driving home I thought I could hear a very slight whining noise which seemed to be coming from the gearbox. But only under prolonged braking/retardation. As the gear changes were rather good I didn't pay much attention to it. But it kept nagging at the back of my mind.

So for peace of mind I decided to check the oil in the gearbox today. Initial plan was to just top up the oil level. But bearing in mind the awkward position of the filler/level plug and the fact that the previous time I drained the oil it had been rather murky, with lots of swarf on the drain plug, I decided it would be better to drain the 'box and refill it with fresh oil. Removing the drain plug revealed a plug that still did contain a bit of swarf but notably less compared with previous time ...


And the oil that came out did contain only very little contamination, but most importantly no swarf from the synchromesh rings or the gears ...


Time to refit the drain plug, remove the filler plug and put 1,6 litre of Castrol Syntrans Multivehicle 75W90 in. Easier said than done when you are lying underneath the car with a rather inaccessible filler hole! Luckily I did have a bit of PVC tubing lying around, which, together with a funnel, makes life so much easier (thx for the tip Phil) ...



With the 'box refilled I turned my attention to the drained oil. I always use the containers from the new oil to store the old oil. And I was mildly surprised to see that all the drained oil fitted inside one 1 litre container. With a little room to spare! Clearly the small oil leak I noticed last year in preparation for Club Triumph's 10CR needs rectifying sooner rather than later ... 

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