Thanks so much for all the input guys.

Cars still running good as gold so looks like I got away with it!

Many thanks

Tel Accept, some days your the pigeon, some days your the statue!

My only thoughts on using or not using these products were in the hope they might keep things clean a la 'preventative maintenance' as opposed to fuel consumption. Wonder if used on lower mileage cars they would stop future problems arising and keep things clean before they even get dirty?

Hmmm

Have read loads pro and against. Assay I normally only chuck one in when asda have redex on sale lol. And then I don't know why.
The reason I asked was the fear running antifreeze through the injectors may have took some coatings or something off. Car seems sound tho Accept, some days your the pigeon, some days your the statue!

Each to their own.