Originally Posted by TBM
I run the MGB on E10 all year round - don't have any bad effects, and average about 28-30mpg. With the Morgan and Harley I tend to stick a tank or so of E5 in at the start of the season, then run on E10 but try and overwinter with E5.

Contrary to a certain opinion several posts above, Fuel mileage is important - if I ran the MG on superunleaded it would be an extra £20 or so a month. I rather spend that money down the pub. It's also one of the reasons I went for a 4/4 originally - I wanted to be able to drive it all year, any distance without worrying too much about the cost of fuel. (I get about 38mpg).

My driving is pretty unsophisticated, so wouldn't really notice any performance difference between E5 and E10 smile smile

I was intrigued by your comments on running E10 in your MGB, as early B's had soft valve seating so were leaded fuel but as yours is a post 76 MGB the engine could run on unleaded fuel suggesting E5 97+ but obviously you don't get pinking as expected using E10.....learn something new every day

Last edited by JohnHarris; 12/02/26 04:10 PM.
22 Plus Four KIMI
12 Plus 4 Sport OZZY
08 Roadster FELIX
06 4/4 70th LOKI
77 4/4 SEAMUS
85 4/4 MOLLY