10w30 vs. 10w40 Understanding the Numbers Behind the Oil

Most people will recommend full synthetic. 0w or 5w will get oil up to the top of the motor faster when the oil is cold and the choice of 30 weight or 40 ... The higher the number after the w, the thicker the oil at high temperatures. It can be appropriate to change to 10w-40 if you are in a hotter ... First service on mine 8 yrs ago, I went to a Honda dealer in OH and told them what I had and needed the stuff for an oil change. They gave me a ... The difference between 10W30 vs 10W40 viscosities is the thickness at hot temperatures. During the cold temperature, they flow at the same rate. A 10W-40 oil is thicker than a 10W-30 oil. Thick oil is suitable for older machines and will limit the risk of leaks. In the 10W-40 engine oil, the 10W (W = winter) simply mean the oil must have certain viscosity or "thickness" flowing at low temperature. The lower the "W" ... Oil 10W30 Vs 10W40 Texas Impreza Club Forum -- TXIC. It's sorta like viscosity, but with a difference. People traditionally talk about 'weight' of a motor oil. The numbers 10, 30, 40 are oil ... Keep using what you've been using, it's a great oil, the 10w-40 is perfect for your temperature range and IMO better suited for the transmission ... Honda recommend that the CBF1000 uses 10W30, known as the viscosity numbers. The “W” stands for “winter”, which relates to how the oil will flow when cold.