That's what I use (and many others). Can usually get it at ASDA for £5 a bottle
RX-8 230,Titanium,2004: Racing Brake slotted disks,Racing Brake 4 pot front calipers,Racing Beat (RB) SS exhaust,RB ARB's F & R, RB REVI intake,Tein MonoFlex Coilovers & front strut brace,short shifter,Greddy sump.
KIMI 1 RX-7,1st Gen,Silver,1983 - SORN
KIMI 2 RX-7,^^Ditto - MOT and active!