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4:50 pm
QuoteCould someone advise me please what fuel I should be using in my 1954 4/44 Should I use the 5 petrol as my engine has not been modified in any way to take current petrol types. HELP!
6:44 pm
Moderators
November 14, 2022
OfflineJohn
Unfortunately, I don’t think there is a definitive answer to that, and everyone (including the so called “professionals”) seem to have their own ideas. There are two potential issues if your engine has never been modified.
Firstly, your engine valves might burn out when using unleaded petrol (all petrol is unleaded nowadays). There are various chemicals you can add to supposedly prevent this, but I used one that had been endorsed by the FBHVC, and my valves still burnt out, (I have now had hardened valves and seats fitted). However, others who use their old cars extensively, maintain it is not necessary….
Secondly, petrol now contains ethanol – either 5 or 10%. Again the jury is out on this one. Some people are convinced that ethanol has messed up parts of their engines (typically alloy and soldered parts), whilst others feel that not all petrol contains that percentage anyway. Being cautious, I keep to E5, but the trouble with that is that it is also high performance petrol which my old Wolseley does not need, and consequently runs hotter than previously.
As I said, sorry but there is no definitive answer. Perhaps others could imput their thoughts.
Bob
9:05 am
Members
January 4, 2013
OfflineAs a little addendum to this discussion, E5 and E10 shows the maximum amount of Ethanol the petrol can contain and tests of various brands of fuel showed E10 quite often containing 5% Ethanol and E5 containing 4% which might explain why people have varying experiences. Ethanol can be removed from petrol completely by simply adding water to petrol in a container and draining off the clear liquid lying at the bottom.
Chris.
4:34 pm
Thanks guys for your response to my query on petrol type. I have for years used Redex Lead Replacement with petrol but the engine has not been modified in any way since at new when it was fitted with, I was told an Alexander Conversion to twin SU carbs, a polished head and stronger valve springs It was bought new by a Met police officer as a Christmas present for his wife who did not like the colour he chose (metalic green) and was sold again straight away. I purchesed the car from that buyer in 1980 hence knowing its story from new.
I have to admit to being a lapsed member of the Register and time I corrected that I think!
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