10W30 vs. 10W40 The Engine Oil Revolution for Exceptional Lubrication

10W30 and 10W40 are made from the same base (assuming we are comparing oils from one manufacturer) with different amounts or types of polymers ( ... 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 ... 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 ... You must have seen the SAE symbol on the oil cans, for example, 5W30, 5W40, 10W40 or 20W50. If 10W40 is taken as an example, the number 10 ... 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 ... Oil 10W30 Vs 10W40 Texas Impreza Club Forum -- TXIC. 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 ... Will you pick engine oil 10W-40 or 10W-30 for your car? Not every car driver know how to choose the best car engine oil for themselves. In the winter, the oil will not get quite as hot as it would in the summer (unless u live in the desert, cali or florida where its always warm), ... Comments64 · Will Thinner Oils Damage Your Engine? · Mineral oil 15W40 vs. · Flow test 0W20, 0W30, 0W40, 5W30, 5W40, 5W50, 10W40 temps +20°C and - ...