Used helix ultra for my DC5 previously, not bad. However, my valve lifters slight tapping in the morning (not sure if it happens to other oil), engine is more silent and losses of oil when high revving is not that much. Used it for almost 8500km with 1 trackday then change it to Mobil 1. There was an occation where i topped up 1/4 of the 0.5 liter helix, which is very minimal.So back to my question, is the genuine Helix good? Or Motul and other brands better?
Now using Mobil 1. Can feel very slight difference at first due to viscosity is lower than Helix Ultra, however its a 0W-40, my mechanic said it tends to evaporate / leak thru seals when high revving, but after one of the trackday, theres no loss at all... considering high revving at a very hot day & low viscosity oil.