Listers,
In my experience with the bulk of octane boosters Bob Spidell is
correct when he said, "the general opinion on fuel additives is that
they're little to no help at best". Years ago I tried every booster
and lead additive I could find. Nothing helped the running of my BJ8
until I was guided to leaded race gas. I now add one gallon of 110
0ctane leaded race gas to 6-7 gallons of pump gas. My Healey ignition
timing is set to spec advance and a little beyond without any pinging
under load or running on when the ignition is turned off. I have been
running this mix for at least 15 years without any side effects. Some
day in the future I will tear the engine down (first ever) for a
rebuild and we will be able to see what the insides of the combustion
chambers and valves look like. I am expecting they will be very
clean. But we will see. I just was on a 225 mile tour with the
Oregon Club last weekend and my 119,000 mile engine ran strong and a
little cool. I think race gas is the additive you should be looking
for if your engine is stock, i.e., has not been modified for unleaded
useage.
Marks 3
1966 BJ8
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