Still not sure what I'll use once I ran out of my NFP stocks Some useful reading https://bobistheoilguy.com/forums/t...ox-oil-choice-for-pk4-renault-gearbox.360615/ https://www.renaultsportclub.co.uk/...k4-gearbox-bearing-issues-on-my-megane-mk4-rs It seems NFX may be more orientated for fuel economy, as are a lot of other manufacturers products - all getting thinner. Anyone tried MILLERS Motorsport CRX 75w90 NT+ in a primarily track day car?
Personally I would stick with the standard 75w80 grade. I tried 90 in my Clio based off advice from others, and it was terrible (granted the Clio boxes are shite though) I’ve just refreshed mine with https://www.opieoils.co.uk/p-981-fu...w-80-synthetic-manual-transmission-fluid.aspx Ran it for many years on track without issue.
