Unleaded fuel.

I used to use the Castrol stuff in a squirty bottle, they do two types one normal and one with an octane boost. I used to use the one with the octane boost in the V8

Castrol Valvemaster eveyrtime although my mates and I refer to it as Castrol C0ckmaster!

Dunno why?

Millers vsp for me.Costs about £3.50 from the main millers factory just down the road.
What's the price like compared to the stuff you lads use?
Been using it for the last 6 years and had no probs.

I use millers VSP with super unleaded on the road in the Seven, but it's got an octane booster so I can't use it hillclimbing.

I use Millers CVL and super unleaded then which "controls the burn" across the piston so reduces engine damage (also as a side effect boosts the octane! )

The Seven has hardened valve seats though, it just needs the octane (really needs old 5*)

I've been very impressed with millers products and they aren't badly priced.

S

Me too, in the Sprite (Amazon has an unleaded 'head). IIRC, the important thing is to use one which is Federation of Historic Vehicle Clubs (FHVC) approved, and then to stick with it (ie don't mix one additive with another).

In my opinion, whatever additive is used it's always best to get a tank of good ol' leaded in every now and then. That way the engine restores its "lead memory" and VSR is kept at bay!
I don't use anything in the Merc as fortunately it has hardened valve seats - just regular 95 unleaded.

Just fit some valves+seats made out of lead.

Always a good idea. There are not that many garages that stock LRP around Leamington, only two that I can think of.

cool! I was up that way earlier I should have seen it! Thanks for the info!