Alexander Gurr Posted February 22, 2012 Share Posted February 22, 2012 As it says on the tin really! I am not happy with the quality of the gear change at the moment, particularly when the car is cold, so want to drain the current oil and refill with Redline MTM. What is the easiest way to do this? Cheers, Alex Link to comment Share on other sites More sharing options...
Stationary M25 Traveller Posted February 22, 2012 Share Posted February 22, 2012 5 or 6 speed ? On my 5-speed, I took the filler plug out of the side of the box and used an oil transfer pump to suck most of it out. Maybe the 6-speed has a drain plug ?? Link to comment Share on other sites More sharing options...
myothercarsa2cv Posted February 22, 2012 Share Posted February 22, 2012 Big long hose, and suck? You can get a sump pump thing too, that looks like a bike pump, that will do the job as well. Link to comment Share on other sites More sharing options...
Stationary M25 Traveller Posted February 22, 2012 Share Posted February 22, 2012 That is what mine is like. Alex - I am going to Papworth on Monday and Tuesday next week .... could lend you mine if you can wait until then ? Link to comment Share on other sites More sharing options...
charlie_pank Posted February 22, 2012 Share Posted February 22, 2012 I just open the sump-plug and it comes out :) When I had a cec, I drilled a hole in the tunnel skin to make access to the plug easier. Then used a vacuum pump to remove the oil... Link to comment Share on other sites More sharing options...
Ozzy Posted February 22, 2012 Share Posted February 22, 2012 6 speed, does indeed have a drain plug. Link to comment Share on other sites More sharing options...
CharlesElliott Posted February 22, 2012 Share Posted February 22, 2012 It's a five speed. The best way is to remove the engine/box but I'm guessing you don't want to do that. I would remove the top plate which can be done in-situ, and then use an oil suction device to suck the majority of the oil out. Or you can do it through the oil filler but that is more difficult. New boxes do take a while to bed in, so if you are not used to Caterham boxes, you might want to leave it for a while. Link to comment Share on other sites More sharing options...
Ivaan Posted February 22, 2012 Share Posted February 22, 2012 If you can get the oil hot before sucking out, it'll be a lot easier. Link to comment Share on other sites More sharing options...
7 wonders of the world Posted February 22, 2012 Share Posted February 22, 2012 Get the oil hot and poke a length of 6mm tube into the filler hole and down to the bottom of the box, start a syphon using a syringe and allow to drain overnight into a tray on the floor you'll get 95% plus out. Link to comment Share on other sites More sharing options...
Martin J Posted February 22, 2012 Share Posted February 22, 2012 Unless it's really bad I'd leave it & see if it eases up with more use. All gearboxes are stiffer in opperation from cold, some worse than others, & the change from 1st to 2nd is always a tricky one. Link to comment Share on other sites More sharing options...
Alexander Gurr Posted February 22, 2012 Author Share Posted February 22, 2012 Thanks for the advice guys I am used to Caterham gearboxes, albeit my old car had a 6 speed box and was 10,000 miles old before I got my hands on it. This is a 5 speed and is truly awful from cold...it feels as though it is broken and a few people have already told me to try MTM Redline and it will make a massive difference. Ian, I will be doing this over the next few weeks, so if you are passing Hertford and are happy to lend me an oil transffer pump it would be much appreciated Cheers, Alex Link to comment Share on other sites More sharing options...
Stationary M25 Traveller Posted February 22, 2012 Share Posted February 22, 2012 Alex - will contact you by BlatMail. BTW - it is Redline MTL (GL4 !) Link to comment Share on other sites More sharing options...
millsn Posted February 22, 2012 Share Posted February 22, 2012 I find pulling the engine/box assy out usually does a pretty good job (not forgetting that the box always holds a little bit back for when you put the engine/box back in over a clean garage floor). Link to comment Share on other sites More sharing options...
Bricol Posted February 22, 2012 Share Posted February 22, 2012 Have you checked the level of the stuff in there at the moment? Correct oil level changed the 5spd in my westie from awful, gritty, noisy, to smooth, quiet and feeling quite new Bri Link to comment Share on other sites More sharing options...
Alexander Gurr Posted February 22, 2012 Author Share Posted February 22, 2012 Quoting Bricol: Have you checked the level of the stuff in there at the moment? Correct oil level changed the 5spd in my westie from awful, gritty, noisy, to smooth, quiet and feeling quite new Bri I filled the box when it went in the car in October, but am not convinced I managed to fill it completely, so asked Caterham to check at the post build check. They said they did this, butnit just doesn't feel right to me, so am going to try again with a different oil to see how it goes Link to comment Share on other sites More sharing options...
Grubbster Posted February 22, 2012 Share Posted February 22, 2012 Slurp it out with an extractor then put soem Redline MTL in, if it still feels wrong then there is probably something amiss. MTL made a big difference to mine. Link to comment Share on other sites More sharing options...
Stationary M25 Traveller Posted February 22, 2012 Share Posted February 22, 2012 Just a thought - you do have a GL4 spec oil in there don't you ? Apparently GL5 lunches on the synchro bits ? Link to comment Share on other sites More sharing options...
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