Product reviewsCastrol 1770 Valvemaster Plus Fuel Additive

Works a Treat

I've been using this product for some 20 years and 40,000 miles now in my classic car which wasn't designed to run on unleaded petrol and have not encountered any issue with valve seat erosion so its safe to say it seems to work.Read full review...

Verified purchase:  Yes | Condition: new | Sold by: just_kampers

A First Rate Product

I use this Product to enable my 1984 Ford Granada to run Safely on unleaded fuel, and hopefully E10 shortly. A great product,enabling me to run on E5 unleaded fuel Safely.

Verified purchase:  Yes | Condition: new | Sold by: demontweeksdirect

Valvemaster Plus - an extended lease of life for older vehicles

One of the few products which offers both valve-seat protection and octane enhancement, both required by old vehicles designed in the 'leaded fuel' era. I have used it for some years and it works on both frontsRead full review...

Verified purchase:  Yes | Condition: new | Sold by: opie-direct

Valvemaster plus

If you have an older type of vehicle that would normally run on 4 star petrol, this is for you. Lead replacement and octane boost to boot.

Good Product Works Well

Does what it says on the label. I have been using this product for 20 years and so far the valve seats in my car are still ok.

Verified purchase:  Yes | Condition: new | Sold by: demontweeksdirect

More power.

Been using this lead replacement in my old van for years. Have regularly checked tappets and they've always been OK. Plus with octane boost and advancing the timing and electronic ignition I've got more much needed power.Read full review...

Verified purchase:  Yes | Condition: new | Sold by: jjcraceandrally

Recommended by the FBHVC for older cars....

It is recommended by FBHVC so it should be good. Only time and an engine rebuild will confirm this and that isn't going to happen! Happy to go with their recommendation.
The measure markings on the side are hard to read and the bottle requires some strong squeezing to get the flluid into the dispensing chamber, that's why it lost a star.Read full review...

Used Castrol Valvemaster plus for many years on my classic british motorcycles. Need the old 5 star leaded petrol. Never had any problems

Used Castrol Valvemaster plus for many years on my classic british motorcycles. Need the old 5 star leaded petrol. Never had any problems

Verified purchase:  Yes | Condition: new | Sold by: opieoils

Works a treat.

Easy to use. Very easy to follow instructions on bottle. Works a treat in my classic car.

Verified purchase:  Yes | Condition: new | Sold by: demontweeksdirect

Impressed

Great product , great price , superbly packed for dispatch , it was a pleasure buying from this company

Verified purchase:  Yes | Condition: new | Sold by: demontweeksdirect