What fuel do you use? Any additives required?

Jmackay
0

Asked by Jun 24, 2012 at 10:49 AM about the 1974 MG MGB

Question type: General

2 Answers

laxley
390

for your 1974 mgb, you can use 87 octane, however you will need to add lead additives. if not you could damage your valves. if you have any other questions, about that particular car feel free to ask me. there was a time in the early eighties when I had 4 mgb gt. and one mgb.

Lars Cats
4,615

Depends on your cylinder head, if it's been converted to unleaded (i.e. hardened valve seat inserts) there's no problem with running 95 RON (85 MON), you only need lead additive for an unconverted head. Also be wary of running alcohol rich fuels like E85 if you have viton tipped float needles, the alcohol tends to greatly reduce their lifespan.

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