Can I stick some forte oil flush stuff in the engine, drive it up to kwik fit and then get them to do an engine oil change?

yes im sure you can, i stuck two bottles if forte engine flush in mine, drove it for a day, and when i started seiing smoke come out the back i drained the oil and filled it back up with thicker stuff, this cured my tappet sounds.

i wish it cured my tappet sounds

mmpob how many miles has your F done? If its getting towards 100k or more it might not be a good idea to flush your engine. Try and get the oil changed when the engine is as hot as possible although not all mechanics like doing this.

I get tappet noise as well although only when cold now i've got 5w40 in, need 10w40 really.

It's done around 81,000. I took it to get an oil and filter change today, forgot about the engine flush completely!! Not sure what kwik fit put in, semi synth of some sort according to the receipt. But is was done after coming off the motorway, so the oil was pretty hot. Saw the heat haze coming off the engine when the guy tried to take the cap off.

So shall I just forget about the engine flush completely?

Yeah dont worry about it, your engine being fully up to temp is perfect for draining all the crap out, also it gets more of the old oil out as its a lot thinner when hot. I've never bothered with engine flush myself, doesn't make much difference in my opinion, like most of those expensive oil/fuel additives you can buy.

Flushing oils contain aggressive agents like paraffin or kerosene, using an engine oil is better.

Cheers
Simon