10w30 vs. 10w40 Oil A Comprehensive Guide

In this matchup, 10W40 oil is slightly thicker than the 10W30 variant. The high-temperature viscosity plays a crucial role; remember, the higher the number ... Motor oil grades like 10W-30 and 10W-40 refer to the oil's viscosity, or how easily it flows, at different temperatures. Researching which oil I'm going to use on my '12 1KRR, and page 138 of the manual says 10W-30 JASO MA, but goes on to list Honda GN4.. Well, which is it? GN4 is 10w40, and heavier, auto oils are not "energy conserving" and do not contain the same friction modifiers that will make you clutch slip. "Energy ... 10W40 has ten more W's than 10W30. There's a formula for it, and you can buy just straight W at any auto parts store, if you have a crankcase ... The difference between 10W30 vs 10W40 viscosities is the thickness at hot temperatures. During the cold temperature, they flow at the same rate. The 40 weight will protect you year round for what you do;-it only has certain factors to the heat build up;-ambient temp and other component ... The Owner's manual tells us to use 10W-30 oil, what would happen if one used 10-40? will this do any harm and why? Both 10W30 and 10W40 oils are high quality and flexible, so they work well in cold and warm regions. However, there are some slight differences between the two. Magandang tugon. Ang tanging idadagdag ko lang ay ang bawat timbang ng langis ay may saklaw ng lagkit na maaaring maging grado. Ibig sabihin, ...