- Aug 23, 2017
- Ontario Canada
Hello all. Wow.....what a source for information!!!! I thought I new a thing or to about engine oils. But now I'm not so sure? I have been twisting wrenches for the past 31 years and a certified diesel mechanic for the last 20 years. I am now a service manager at a small town commercial garage that happens to repair anything with an engine. I am trying to find a good oil to run in my 2015 Yamaha FZ09 and my wifes 2015 FZ07. Untill now I have been running Yamalube 10w40 mineral oil with a Yamaha filter (to aide in any possible warranty issues they may have run into). Now that all warranties are done I can use the oil of my choice. I have always told my customers and fully believe that as long as you use a GOOD quality NAME BRAND oil, and change it religiously at the specified intervals you should do fine. I also do not believe that synthetic oil needs to be used just because anybody says so. They have a time and a place. I am not in that place lol. I have been blown away to recently read on these forums that Shell Rotella T4 15w40 mineral oil that we have been putting in large diesel engines for decades is ok to run in my motorcycle? Anyone in my small world around me says I'm crazy and I believe has fallen into the catagory of people who think that only an oil tagged MOTORCYCLE oil can be used due to starter systems, clutches, and transmissions. And only because they have not bothered to inform themselves with any facts. I was trying to research and compare UOA samples on this site for Yamalube, Motul 3000, and Castrol 4T (all 10w40) when I was taken back by the readings of Shell Rotella. Especially considering my office is on the other side of the wall from a 1000L bulk tank of Rotella 15w40 that I can purchase at cost for peanuts LOL If I could get some of your opinions on the above mentioned oils and what some of you may have seen from previous UOA samples of them that would be awesome. Sorry for the long read!!!!