10W30 vs 10W40 A Comprehensive Comparison for Automotive Enthusiasts

Dive into the world of engine oils with our informative guide on the key differences between 10W30 and 10W40. In this video, we unravel the ... Both 10W-30 and 10W-40 are multi-grade engine oils, which means they carry properties of different weight oils, depending on the conditions. 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. For my Tohatsu 30 HP 4 stroke is 10w-40 or lighter 10w-30 preferred for winter operations in my 18' aluminum boat. The main difference is that 10W40 oil is thicker than 10W30 oil at higher temperatures. Both have almost the same characteristics – the only difference is the ... 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 ... Synthetic vs. Conventional · Exclusive Distribution · Performance Testing · Our Leadership · P.C. Program · AMSOIL Warranty · The Inside Track. Customer Service. Car Engine Oils by Grade: 0w-20 0w-30 0w-40 5w-30 5w-40 5w-50 10w-30 10w-40 10w-50 10w ... 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 ... The SUS viscosity is the same for both, but the 10W40 has more fortifiers to maintain the viscosity at higher temperatures.