10w30 vs. 10w40 The Essential Guide to Engine Protection

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 ... The newer 10w40 is better for valve train noise. Is this true? I have typical "loud" valve chatter/ injector "tapping" noise on my gen 2rt10. 10W-30 oils had better base oils and less viscosity improvers due to the narrower spread in viscosity, which is preferable. 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 ... While the viscosity of a heavy duty engine oil accounts for its contribution to fuel economy, it is the composition of the base oil and additives that protect ... RECOMMENDED ENGINE OIL QUANTITY ; Super Splendor 125, Super Splendor S.V, BS-IV, 10W30 SL MA2, 0.95 litre ; Xpulse, Xpulse 200, BS-IV, 10W30 SL MA2, 1.20 litres ... Choose 10W-40 for high temps and older engines; 10W-30 for newer engines and better fuel economy. Redline's 5w30 starts out with a thinner viscosity of 10.6cst at 100c, compared to it's 10w30 which is at 11.0. Also, I've seen oil analysis ... Definitely 10w30. As long as you are not enduro racing in the heat of the summer, 30 weight is fine. Whereas thick oil when cold provides less ... 10w-30 or 10w-40???? ... was wondering which oil to use for 4th gen 1996 vtec model. friend got cases of red line and i have to know which ones to ...