Thanks, as I understand it the new Classic VM/+ is a different formula.
It may have been on here, but there was a post complaining about the changes.
The information in the post basically said there's now little point getting the Plus version over the regular version as the Plus version only differs in its addition of cleansing agents (the octane booster was removed, both had ethanol protection added) and as most petrol from the big brands has cleansing agents already in it, you may as well save your money and go Super Unleaded E5 + regular Valvemaster.
The reason I always used VM+ in the past was it was the only FBHVC approved additive compared to the others that were out. Howver I see now others stating they're FBHVC approved, while I could find no information that the new VM/+ is still actually approved by them or not since all the information was in regards to the old Castrol product.
It's a bit of a shame that judging by the Tetraboost images, it doesn't look as convenient to measure out as the likes of VM/+ though I presume that's down to the warnings of toxicity, flammability and oxidation, and a 3 year BBE date.
That said it's actually not all that expensive, for example 500ml of VM (standard) is £38, 945ml of Tetraboost is £47.95 so you're only paying an additional £9.95 and getting 445ml extra.
Though looking into it, I see the real expense comes from one bottle of Tetraboost treating 116 litres of fuel, while one bottle of VM treats 250 litres.
what is the additive protecting from the 5 percent ethanol and what is gained?
I'm no authority but as I understand it, if the car is regularly used then it's probably not much as it's all being burnt off and not sitting round. The main thing I *think* is corrosion going on to rubbers/metals if it's sitting around.
Also I believe E5 means 'up to 5% ethanol' meaning you don't even know what % the fuel even contains in the first place, just that it *might* be as high as 5%.
