Also of note: Mobil 1's 0w20 is on the thick end of the 20 weight scale. Their 0w30 is on the thin end of the 30 weight scale. The functional difference between the two is actually tiny. Other brands may be different (ie. Redline's one of the thicker 30w oils). 0w30 is generally good stuff. The Mobil 1 0w30 actually has higher viscosity at operating temps than their 10w30. I have had oil consumption using their regular (not Extended Performance) 5w30, but none with the 0w30. Don't let the "0" scare you. German made Castrol Syntec in 0w30 is one of the better 30 weight oils you can buy. Another key difference between 0W20 ANS 0W30 engine oils lies in their capacity to cool engines down and the concomitant temperatures associated with engine activity in both sets of engines. Sander et al. (2017) assert that friction within the engine bearings leads to the production of heat and their temperature rises substantially as a result. It won't harm anything. However, it won't help anything either. The difference between the two lubricants in terms of viscosity is nearly insignificant. Now, if you went for an ACEA C3 0W-30 or 5W-30 then you'd actually get a thicker oil with a HTHS of at least 3.5. There are C3 oils that are also C2! 1. 2. These are the current prices of TGMO 0W-20 at Toyota dealers: 00279-0WQTE-01 $5.32 - $7.25 per quart 00289-1QT0W-T1 $4.89 - $6.66 per quart, need to buy 12 (case) The cost to dealers is slightly (about 18%) less than the first number. The second number is the Toyota suggested retail price. So Toyota has a specific 0W20 and 0W30 motor oil for the 2020+ Supra. It's labeled as Toyota Gazoo Racing motor oil but I know no car manufacturer makes their own fluids, so trying to figure out who makes it and what it is a rebrand of. Label says it's made in Spain. bobistheoilguy.com. What Is the Difference Between 0w20 and 0w30 Oil? Viscosity. A fluid's resistance to flow is measured by its viscosity, and this is the case with motor oil. The thickness Fuel Economy. Every engine can benefit from using either 0w20 or 0w30 motor oil. They have the potential to improve the Hot The first thing to notice is that the 5W-30 engine oil is a higher viscosity oil than the 0W-30. 5w-30 engine oil's capacity to operate within a wide variety of engine types and under a wide range of temperature conditions makes it incredibly versatile. Whether you have a petrol or diesel engine, 5w-30 is quite often the recommended engine Hot Weather Can I Use 0w20 Instead of 5w30? Accidentally Used 0w20 Instead of 5w30: Is It Ok? 0w20 vs 5w30 High Mileage Which Is Better, 0w20 or 5w30 Oil? When should I use 0w20 and when 5w30? 0w20 vs. 5w30 Toyota 0w20 vs. 5w30 Nissan 0w20 vs. 5w30 Subaru 0w20 vs. 5w30 Mazda 0w20 vs. 5w30 BMW 0w20 vs. 5w30 Ford 0w20 vs 5w30 Chevrolet Temperature range comparison Additional Motor Oil References Comparison of the two: Within the engine oil world, viscosity, as the most prominent characteristic, is notated with a term "XW-XX". The digit preceding W describes the oil flow at 0 degree Fahrenheit (-17.8 degree Celsius). W stands for winter. MFwicrM.