[Paul Coleman]

If its motorway miles then you can get away with the recommended service interval but if its stop start driving then cut the intervals in half at least, especially if you have a turbo charger,these things like good oil circulating in them. And with newer type turbo diesel engines stick exactly to the specified oil.

I hadn't heard this before.  I know that stop/start driving (such as I do a lot) does take it out of them more but just assumed the service intervals allowed for a fair bit of this.  The only time I do a motorway run is if I'm going up to south London for some supplies or, very occasionally, if I'm using the van to go on holiday or to a trade show.

[Scrimble]

i service my van about every 10k oil and filter, air filter and spark plugs. but it runs on lpg so the oil stays cleaner for much longer than with petrol/diesel,

service intervals of 20-30k is asking for trouble, check fluid levels every month at least and once the oil starts to go black then its time to change it.

cost of service about 40 quid and i do it myself easy.