Although that additive Valvemaster may combat E10, not so sure that it is compatible with catalytic convertors?
Also, I understood that all 4 Cylinder Rover engines from the 90s were not compatible with E10.
Williams have produced a write up on E10 but it is not specific as far as pipes etc are concerned as I am not sure even MMC know what they have used over the years. General advice is to monitor pipes and equipment for deterioration.
I always get my E5 from Esso.
Look at the Maintenance forum, scroll down to the E10 posting, I added a thread on 20/08/2021 referring to the Williams advice.
Last edited by Deejay; 07/09/21 06:41 PM. Reason: more info re: previous thread
