Product details
Millers Oils CVL and Octane Booster 250ml – Valve Protection with a Power Kick
If you’re proper serious about looking after your engine and squeezing out a bit more performance, this Millers Oils CVL and Octane Booster is well worth having in your toolkit. It’s crafted to lubricate valve seats and improve combustion – a real boon if you’re into motorsport or simply fancy giving your engine a bit of TLC.
So, what’s it actually do?
You chuck this into your unleaded petrol – one 250ml bottle covers up to 20 litres – and it keeps your valve seats nicely lubricated. The upshot? Less wear and tear, a smoother-running motor, and potentially a longer engine life. On top of that, the octane boosting side of things means your fuel burns cleaner and more efficiently, which can give you a noticeable kick in performance when you’re pushing your car a bit harder.
Why bother?
Valves are proper vital components in your engine, and if they get chewed up or overheated due to poor lubrication, you’re looking at some pricey repairs. Think of this product as a bit of a bodyguard and motivator for your engine at the same time. It’s especially handy if you’re running a high-performance or motorsport engine that’s under more strain than your average daily driver.
How to use and store it
It’s dead simple – add one bottle to up to 20 litres of unleaded petrol. That said, every engine’s a bit different, so if you’re really pushing the limits, you might need to fiddle with the dosage a touch on a test run. Keep the bottle out of direct sunlight and away from heat to keep it in tip-top condition.
Final thoughts
If you’ve been wondering how to keep your valve seats happy or get a bit more from your fuel, this could be just the ticket. It’s no miracle cure, but it’s a clever little helper that can make a noticeable difference over time. Just remember, regular care and keeping an eye on how your engine’s feeling is the name of the game.

