There have been discussions on some proboards that have gone viral. One in particular is the topic of using boric acid in your oil. I will be posting my results here. It does work if done correctly.
From what I've been reading only Humco Boric Acid Powder NF. It is the finest powder. Most posts say to shake 2 teaspoons into 750ml of oil, WRONG. This just puts the BA in suspension which will fall out when you stop shaking
I use Castrol Tection Extra SAE 15W-40. This is a great heavy duty oil that will stand up to the heat.
Using a kitchen blender, start the blender, add the BA and 1 teaspoon of water. Keep the blender going until the oil gets to a temperature of 200° F. I use a long stem BBQ thermometer in the oil while I'm blending. Once it gets to 200° F, turn the blender off and let the oil cool. At this point it looks like the original oil, and not milky as it would shaken. The BA is now combined with the oil.
Once it's cool, pour it back into an empty oil bottle and label "BA-200". I'm getting ready to make a couple more batches..
My wife and I got 2 Roketa MC75-150 scooters last year. Since then I have been making small changes. Here is the final result that gives us a great ride. I added an electric fuel pump (My gasket) I'm running 3 - 14 and 3 - 16 gram weights. The belt is standard. I've been running oil with boric acid for 2000 KMs. I have removed the stock air filter, added a K&N filter using PVC to make an adapter from the original tube and the filter. I use a PVC reducer to restrict the airflow.
Now at 50 MPh or around 7000 RPM the engine slows down dropping 1000 to 1500 RPM while the speed increases. I have been able to hit speeds of 70 MPH without over revving. It cruses great at 50 - 55 MPH.
My wife's has only been doing this since I have been using boric acid in her oil.
We did a 75 mile round trip last weekend in the Texas countryside with no problems. It was a great ride.
We are both running Bridgestone 130/70-13 on the rear and Pirelli 130/60-13 on the front.
The scooters ride like we are on a cloud. For detailed info you may contact me. The additional saddlebags and windshield just add to look and ride. Enjoy your ride, they are the best.
www.scooterclub.us