10w30 vs. 10w40 The Battle for Engine Supremacy

10W-30 and 10W-40 are very similar, folks living in very cold areas may opt for a 5W-30 and folks living in extremely hot climates may select a 20W-40/50. 5W30 vs 10W30. Learn the key differences between 5W30 and 10W30 engine oil in this comprehensive video from Honest Mechanic. 10w30 is a more all year oil for a very broad range of temperatures. It has more protection for lower temperatures than 10w40 at the cost of being not as good ... ... 10W-30 (51). 10W-40 (26). 10W-60 (3). 15W-40 (25). 15W-50 (8). The only time you have to even consider going to thinner oil when it gets cold is if the starter can't turn over the motor fast enough to start the motor. The difference between 10w30 and 10w40 is the thickness of the oil at operating/high temperatures, at which 10w40 is thicker than 10w30. First off lets look at what 10W30 & 10W40 means. The first number, they are both 10 weight oils, no difference when cold. The second number, 30 ... Comments64 · Will Thinner Oils Damage Your Engine? · Mineral oil 15W40 vs. · Flow test 0W20, 0W30, 0W40, 5W30, 5W40, 5W50, 10W40 temps +20°C and - ... 5738 Likes, TikTok video from DeXJs_ (@dexjs_): “Difference between 10W40 and 10W30!! HUGE!! #oilchange #mechanic #automotive #engine”. As others have said you can use both grades in any Honda bike however if you run 10-30 you may see better mpg since 10-40 is a slightly heaver ...