MOTOREX 4T 5w50???

Has anyone ever used this...will it be ok in my R1?? Fairly new to bikes, and would appreciate the advice.

The R1 owners manual states using 10W40. Personally, I would not stray from that. 50, IMO, seems a little heavy unless you are racing. Otherwise stick to 10W40. However, discussing oil is like discussing religion or politics! And welcome to the sight.

Thanks for the tip. My brother bought it for me and swears on it. He has a ZX6R though. Not sure if that matters. I hate to give it away because he spent $50 on a gallon jug, but I don't want to mess up my engine either.

I see your from FL. Simply buy a jug of 10w-40 of the same exact type and brand of oil and mix the two together 50/50. This will yield you a multi-weight of 7.5w-45 weight motor oil. If you mix two equal parts of each jug, (5w-50 & 10w-40) 7.5w-45 is EXACTLY what you will get. This mixture will yield you a multi-weight that is a lot closer to factory spec. The 45 weight will be perfectly fine in the hot FL sun.

Edit above post: If you really want to get close to 10w-40, you could alter the ratio in which you mix the oil. You could spread the gallon of 5w-50 out over 3 oil change intervals, and you would be really close to 10w-40. Absolutely no need to throw the $hit out.

Edit above post: If you really want to get close to 10w-40, you could alter the ratio in which you mix the oil. You could spread the gallon of 5w-50 out over 3 oil change intervals, and you would be really close to 10w-40. Absolutely no need to throw the $hit out. That's what I would do.

Thanks for the tips, I think I will buy another gallon of heavier oil and mix it. The shit's green so I dont know if I want to spread it out over oil changes with the existing oil

It's perfectly fine to mix multi-weights as long as they are the same exact brand and type. Simply just buy a gallon jug of Motorex 4T 10w-40, and use a one to three ratio. (one part 5w-50 for every two parts 10w-40) The mixture ratio is not critical, and does not have to be perfect, as your just mixing multi-weights together. Like I said, all that matters is that you mix the same brand and type of oil, as it is perfectly fine to mix multi-weights that are of the same type of oil. By mixing 10w-40 with the 5w-50 that you currently have, you would be essentially narrowing the viscosity range of the 5w-50. (5 is too low, 50 is too high) Your gallon jug of 5w-50 should yield you about 3 oil changes when mixed with 10w-40 utilizing this ratio.