Injector cleaner! yes/no

[ro284]

Just wondered what you guys thoughts are on this stuff, is it benificial to add to my 99 ron + premix concoction, i have used it in a Cosworth Scorpio, with good effect i think, (smoother running, but could all be in the mind!)
but will it help in a rotary? any advice please,
Cheers Bob

[banned advertiser]

Have sold a fair amount to customers, but no good unless used reg or if really old injectors you maybe better off cleaning with ultrasound first then using on reg basis. Will work as good on any car, rotary will not be any diff.
http://www.rotaryart.uk.com/acatalog/Royal_Purple_motor_oils.html