[itullberight]

Originally Posted by damianscott71

Tsk! Isn't that always the way? Actually you can put it in your engine at any time and leave it, but I'd rather put it in a few days before a service.

If there are any doubters out there (there always are) regarding putting the flush in and leaving it, it says you can on the bottle and I called Comma tech support department to double check.

Can’t say I agree with you! Flushing oil is not too bad for new engines, but is a definite NO NO for older ones as they fall apart after treatment.

Rather than put in flushing oil I would check with the dealer if they are using Semi-synthetic or fully-synthetic, my best advice is that you should insist on them using fully-synthetic, this oil is proven to clean and lubricate better and reduce carbon and sludge deposits; and there will be no need for flushing agents.

As for being sure that it is ok to leave in because it says so, on the bottle and this was reinforced by the tech support, you are a much more trusting person than me! After all they are only interested in one thing, selling you there product! And if it damages your engine you have to prove that it was the product that caused the damage; not easy and not cheep either.

Pay a few quid extra and get the best oil, (what you pay for the flushing oil will probably be the same) and you should have no problems, as I was always told “oil is cheaper than metal”