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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.
Verified purchase: Yes | Condition: New
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
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 fronts
Verified purchase: Yes | Condition: New
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.
Verified purchase: Yes | Condition: New
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