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Hello there, I'm planning to add ester engine lubricants addtive that also contain base oil other than ester and some anti wear (heaxognal boron nitride). My question is, what is the limitation to add ester into 800ml moped cranckcase? I don't know how much ester inside the additive but it comes...

Does anyone knows what is the common chemical substance for barium and dioctyl as anti wear and/or friction reducer in engine lubricants additives? Is it safe for long term use? Please advise.

Hello, if anyone can explain by experience, is it 5W oil really makes engine vibrates more than 10W? I tried several fully synthetic lubricants (0W and 5W respectively) and both makes my 115cc moped vibrates like jackhammer 😆

A friend of mine use motor oil that contain Boron Nitride. After the oil reach end of life, he change it with oil that contain Molybdenum Disulfide. Once again when the oil reach end of life, he drain it. Each time before pouring fresh motor oil, he inspects the piston liner, pistons and its...

Hello guys, I'm curious about gravitational force on motorcycle piston, how much of it during motorcycle operational especially upon piston and piston rings? If I drives on constant speed like 60 kph can we predict how long the piston and rings will last, with the assumption we use adequate...

I'm curious about the viscosity of gear oil with SAE 250W or ISO VG 680 and greater is? Do you have any illustrations for that?

After reading grease compatibility chart, I have two questions. 1. If I mix aluminum complex and lithium complex grease, will it safe for rubber part on my motorbike? 2. If the mixture of aluminum complex and lithium complex not recommended, can I use H-1 complex calcium sulfonate grease, also...

A friend of mine told me that this "Advanced Fully Synthetic" labeled lubricants is much better than full synthetic lubricants. What is this advanced fully synthetic? Please advise.

Need your advice, one of my friends argue with me that PAO will not compatible with diesel fuel, maybe he thought about high sulfur content or diesel fuel character that will simply destroy any PAO content, is that true? If so, why Mobil and any other manufacturer provide fully synthetic diesel...

I wonder, does lubricants with GM-Dexos specification safe for wet sump clutch?

Please help, does Bis(nonylphenyl)amine CAS No 36878-20-3 consider as PAO (polyalphaolefine)? numerous lubricants producer use this substance in their products. Valvoline SynPower is one of them.

Hello there, I bought 4 stroke moped, 113 cc 3 years ago. Recently, it has to underwent minor overhaul, change it liner and piston set. Right now, after overhaul, my moped already ran for 1200 km. Last time I checked the dipstick, 2 days ago, the engine oil came short approximately 100...