Motorcycle oils are specifically designed for motorcycle engines. The challenging lubrication requirements of motorcycles get some of you confused. Spectro Lubricants answers a couple of your new questions.
Question. At what oil operating temperature will your Heavy Duty Platinum 20w50 synthetic oil start breaking down?
Answer. Spectro HD Platinum 20w50 won’t start to break down until at least 300º – F, we recommend oil operating temperatures between 180º F and 270º F for longest engine and oil life.
Question. Can I use your Spectro Platinum 10w60 in my Harley-Davidson Ultra Classic Electra Glide motorcycle?
Answer. Our first choice would be Spectro’s HD 20w50, however under some circumstances a 10w60 may serve as a better lubricant for the engine. Under conditions of extreme cold, a 10w60 would offer better starting performance, faster oil pressure and in the case of high heat more film strength.
Question. Is it a good idea to go from FULL synthetic to SEMI synthetic? I use Amsoil full synthetic. My mechanic (and very good friend) says he recommends Spectro Golden 4 semi-synthetic. I trust him but, could you give me a reason/or reasons why he may be right? He has used Spectro Golden 4 semi-synthetic for years and he highly recommends it in my bike. Is it a good idea?
Answer. Spectro Golden (semi synthetic) is a very robust formula that often out performs other full synthetics at a better price. It’s a blend of the best mineral oil (our Spectro 4) and our Synthetic (Spectro platinum 4 100% PAO synthetic) at a 30/70 mix. Many semi synthetics have a small amount of synthetic stocks in them (less than 10%), there is no standard or rule says how much synthetic needs to be used in the blend. There is no issue with switching from full synthetic to semi or mineral oil. It’s a “wives tale” that refuses to die, and has no basis in science or real world engine performance. All Spectro oils are “batch blended”, much in the same way as craft brewed beer is made. It’s a slower and more expensive process, but yields a better and more consistent finished product. To my knowledge, we are the last blender to still use this process. We also use generous amounts of zinc (zddp) and phosphorus in our blends, these are the best anti wear additives money can buy and help engines last significantly longer. Since 1966 we’ve produced some of the world’s best lubricants, and will never compromise quality.