The CUB110 is equipped with a Cartridge Type Oil Filter at the request of the Japan Post, the largest user of the CUB110, while the CUB125 is equipped with a Mesh & "Centrifugal Filter. It is In the past, when I had a TL125 with a centrifugal filter, I cleaned the filter when I changed the clutch, and was surprised to find a large amount of Gold powder in the filter. In the current usage, there is no chance to loose the Crankcase of my car CUB125. I changed the oil from NORMAL when I changed the oil at 1,800 miles to reduce the amount of gold dust in the engine. Oil replacement at 2900 miles. The removed drain bolt was covered with Gold powder with a thickness of 2 to 3mm. As the mileage increases and the engine acclimatizes, the occurrence of Gold dust will decrease, but I believe it will help maintain the engine condition in a good condition.
Since my 2018 Honda Monkey 125cc does not have traditional oil filter and runs the oil spinner system I wanted to add a little extra protection for the engine. The Special Parts Takegawa magnetic drain bolt was what I ended up purchasing and as with all the other Special Parts Takegawa products I have purchased in the past I am extremely happy with it. I have had it installed on the bike for a few oil changes now and when removed you can see it is doing its job. Along with the magnetic tip on the drain bolt it also has a hole drilled through the bolt head to mount a temperature sensor so as to be able to give you an indication of your oil temperature which is handy when you are running the motor hard.