Unfortunately it only goes to 0 degrees C . The difference between 0w30 and 5w30 doesn't get that significant until the temps get way down low such as -35 C . The graph's Y-axis scaling is far too coarse. It needs to be closer to 0-100 or 0-50 cST. If 0w20 were plotted on it currently it would also appear to merge with 5w30. Last edited In the end, the difference between 0W20 and 0W30 is pretty simple, 0W30 is thicker, denser, or more viscous at operating temperatures, while at cold temperatures, both oils have the same 0W rating. But determining which is better is a little trickier. This intense pressure creates friction that can waste up to 10% of engine performance and severe heat can reduce oil flow. Castrol EDGE Euro Car fluids are engineered with Fluid TITANIUM Technology to transform under pressure, increasing its film strength to prevent oil breakdown and reducing friction to unlock maximum engine performance. In TX the "0" will never benefit you. I think our cars benefited a little when we used 0W-20 on long road trips. I noticed a significant improvement in gas mileage on highway runs, smoother idle and of course faster warm up/flow times in the winter season vs using 5W. For the rest of us oppressed Americans, 0w-20 for the granny drivers, and 5w-30 for us dynamic drivers threading the thin line between Jail, 3000+ in fines and higher insurance costs. This video is a good watch. As another note a 5w oil is thinner at 70 degrees F than a 0w oil. Last edited: Jul 9, 2017. They gave me a 2018 Dodge Town & Country 3.6L rental until they finish my car. I checked the oil in the Dodge and found that it calls for 5W20 oil. And the manual for the 2018 Dodge says that "Mopar SAE 5W-30 engine oil approved to FCA Material Standard MS-6395 such as Pennzoil, Shell Helix or equivalent may be used when SAE 5W-20 engine oil a9KQQxD.

difference between 0w20 and 0w30