I have used this product before and it does help my 75 year old car .
Verified purchase: Yes | Condition: New
This was my second purchase of this product. However, I will not be buying it again as the useage of the product is so frustrating. I am unable to evaluate the additive itself as this would require laboratory facilities and the passage of time. Therefore I can only report on that which I can observe. The dosage facility in the container only caters for either 25 or 50 litre options. My 1967 Triumph and 1965 Humber are usually filled up with around 10-15 litres. This is extremely difficult to measure and relies on guesswork. The product was delivered with the dosage chamber filled to over the 50 litre mark! Not good. Millers Oil states that the product should be used in the concentration of 1ml per 1litre but this is very difficult to achieve accurately. Castrol Valvemaster has a much easier and accurate measuring device.Read full review
Verified purchase: Yes | Condition: New
As a recent classic car driver, my MGB GT has used Castrol additive plus for my unconverted 1974 head and finding it unavailable everywhere now i tried Millers despite the price, I am finding Millers a vey expensive replacement although good quality and will try cheaper alternatives in the future.
Verified purchase: Yes | Condition: New
I believe this is the best product so far to protect my collection of vintage and classic cars as provides lead replacement and protection of the fuel system from ethanol damage and deteriation. Also increases the octane rating of the fuel so able to use basic unleaded fuel.
Verified purchase: Yes | Condition: New
Does seem to stabilize combustion and the engine fires up quicker, the big test is are the exhaust valves protected will not know until further down the line
Verified purchase: Yes | Condition: New
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