(10-06-2011, 10:35 AM)andy-womble Wrote:
(09-06-2011, 10:54 PM)corkgsxr Wrote: but the bike tires have more grips so less slippage, and have to deal with a shed load more power. and hard downshifting.
i just dont believe the van box has to do more work than the bike box.
So the fact that the van gearbox has to be able to transfer enough power to shift up to c.1,800kg of van and payload (yes nearly 2 tonnes) does not come into the equation????
If the van box did not have to do so much work or produce so much torque it would only need to be the same size as a motorcycle gearbox so presumably the boffins that design vehicles have got it all wrong and the same box can be used in a motorbike, large van or even a heavy goods vehicle???
I tend to think not somehow:!::!::!::!:
Thanks given for that - and you're forgetting the Berlingo 800 - that's a GVW of over 1,900KG
Cork, I really don't mean to be rude, but you're so far wide of the mark here, it's not funny. Motorcycle engine oil WILL NOT suit your berlingo's transmission. Do not use it. If the other PSA stuff I've come across is anything to go by, the gearbox is designed to work with a specific grade of lubricant somewhere in the region of a 75w/80 oil.
Having spent the last 10 years assisting at a garage that prepares, builds and repairs race vehicles (from 500kg formula ford cars to 4 ton plus monster trucks packing 1,300 bhp, it's safe to say that I've got a good enough understanding of what I'm talking about. It almost sounds like you've asked the question, in the hope that we will say "do it". Well, I for one will not, as it is not right and potentially detrimental to the vehicle's longevity.
When I bought my car on 83,000 miles a few years back, it was horrible (as i found out the first cold morning) to shift into second as it would "baulk" at engaging, however, once warmed, it was fine. I took it to my friend who recommended that, as we don't know what oil is in it, we put the correct grade of oil into the box to ensure that it's not something simple before we tore into the trans to find the problem.
Sure enough, the CORRECT grade oil later and it was, and still is with 285000kms or 177000 miles, fantastic. Heck, at 150,000, it had a clutch change. My friend helped and checked the transmission over whilst it was off the car. He fetched it back declaring that he'd seen worse gearboxes with 50,000kms, let alone 150,000!
It's a false economy to use the incorrect lubricant, but it's your vehicle, your choice.