So Penrite have recently released their own range of motorcycle oil, some of you may have already seen it hit the selves and it finally appeared in my local autobahn. Penrite motorcycle-oils The VTR1000 had Motul 3100 filled at its last service (30k service by previous owner). I was very unhappy with how i was riding thinking it was my technique or a mechanical problem of some sorts. The problems were 1st and 2nd gear were very "grabby and clunky" gears require some effort to change phantom neutrals Neutral hard to find clutch wasn't engaging smoothly engine noticeably nosier as temp gauge approached 100C After 2500km on the motul shit i decided today to change the oil. After reading lots about riders using gas and diesel oils i was going to give HPRGAS 10 a go but saw Penrite's new MC-4ST 10-50w oil on the shelf. At $36 i thought why not. MC-4ST Specs Industry Specifications API CH-4/SL JASO MA Typical Data Density at 15oC, kg/L 0.867 Viscosity, Kinematic, cSt at 40oC 130 at 100oC 19.1 Viscosity Index 167 Cold Cranking Viscosity, cP at -25oC 5,074 Zinc, Mass % 0.122 Phosphorus, Mass % 0.110 Sulphated Ash, mass % 1.22 Base Number, mass % 9.4 There is very little difference between HPRGAS 10 and MC-4ST spec wise, but has apparently been engineered directly for motorcycles On the ride home, improvements all round, shifting is firm and smooth, 1st and 2nd are still a bit loud when shifting but no longer need as much effort. Clutch is a dream, and here i was thinking it was my technique! So far i haven't found phantom neutral shifting into 2nd and much easy to find when stationary but more riding will tell. Sitting at 94C in the carport the engine was nice and quite, well for a VTR I'm not saying this is wonder oil or anything bit its much better then similar priced motorcycle oils i've had experience with. Time will tell. So for anyone looking at these new Penrite oils i can say for the price you can't go wrong. I'll keep you updated in a few 1000km to see how it goes. But at the end of the day use what ever floats your boat.