Page 1 of 1
unleaded fuel in XJ-SC V12
Posted: Thu Sep 21, 2017 3:44 pm
by MrV8
I have a 1986 XJ-SC 5.3 V12 with just under 50,000 original miles in the clock, looked after by Swallows in Rooksbridge. I've never asked the question about running it just on unleaded. I use Shell V-Power nitro and no lead additive. Is this best practice or should I be using lead additive either periodically or constantly?? With the old girl having made it this far in life, I don't want to run the risk of damaging the gorgeous V12 engine!
Re: unleaded fuel in XJ-SC V12
Posted: Thu Sep 21, 2017 7:03 pm
by Brakebuster
no lead additive required at all
the engine is designed to run on unleaded fuel ,
BB
Re: unleaded fuel in XJ-SC V12
Posted: Thu Sep 21, 2017 7:07 pm
by davidr
As BB says, all XJS's were built to run on unleaded fuel so nothing to worry about. I find that mine are happier with super unleaded but will run perfectly effectively on normal unleaded.
Re: unleaded fuel in XJ-SC V12
Posted: Thu Sep 21, 2017 7:23 pm
by MrV8
Thanks very much for your quick replies. I feel a lot better now!
Andrew