I've used revive on a cdti vectra at the weekend with sticking variable veins diagnosed by a tech2 vaux specialists.
Didnt make a jot of difference, gonne have to take the turbo off for a clean at a turbo specialist. A bit dissapointed because i read allot of good things about it.
I got my Revive starter kit from Bennets (car parts supplier) for under £50 incl VAT
Some four tonnes of product (approximately 5300 applications) have now been shipped, with negative reports of it having no discernable effect literally in single figures. There are a few possible reasons:
1,Inaccurate diagnosis of the
problem, so the vehicle fault is not actually due to the VNT vane mechanism
2, Fouling of the vane mechanism has become so bad that it is essentially siezed, or indeed has mechanical issues causing it to sieze. (the recommended action of operating the actuator, where possible, with a manual pump during the application would indicate how siezed the mechanism may be)
3, Non-ideal conditions of application - starting with a cold engine gives the material the best chance of success, as it minimises excessive evaporation as it passes through the system. It is still effective to a degree when applied to a warm/hot engine but generally this is considered to diminish the benefits due to excessive evaporation. Obviously there are instances when it is impractical to have the engine cold, and this is not always possible.
If you are having the turbo removed to have it cleaned, it would be very interesting if you could possibly report back the condition of the vane components and overall mechanism as you find them