Should I use 15w-40 or 5w40?
5w-40 has a broader operating range than 15w-40. Unless you’re penny pinching or you’re misinformed about synthetic oils, it’s stupid to pick the 15w-40 option. There is a single benefit to 15w-40 oils though, they will maintain their 40 weight operating viscosity longer than an oil that starts at 5w.
Is it OK to use 5w40 instead of 15w40?
YES. Lowering the first number gives you much faster oil circulation on every startup, and especially in the cold. So you engine will have lower wear on every start-up. And since it flattens the viscosity curve, in hotter areas, like turbos, a 5W-40 will have more viscosity than a 15W-40.
Is 15w40 the same as 5w40?
In general, in a given engine at operating temperature a 5W-40 and a 15W-40 have the same viscosity; one will not be “thinner” or have a lower viscosity than the other. Both will have a viscosity of a 40 grade.
Is all 5W40 oil synthetic?
A 5W-40 grade oil can be either mineral or synthetic. The grade or viscosity of the oil is determined by the viscosity modifiers in the base oil.
Is 5W40 good for diesel engines?
While 15W-40 is suggested as the predominant viscosity for your engine, GM does recommend 5W-40 for temps below -18°C (0°F). AMSOIL’s official stance is that their 5W-40 synthetic diesel oils are safe and perfectly suited for year-round use under all conditions and loads.
How much oil does a 5 9 Cummins diesel hold?
All 5.9L Cummins turbodiesels (6BT and ISB) feature a 12 quart oil capacity (with filter change) and share the same oil filter.
What is the meaning of the 15w40 engine oil?
What Does “15W40” Mean? “15W40” refers to the viscosity grade of a multi-weight oil, where 15W refers to a cold grade of 15 and 40 refers to its viscosity grade at running temperatures. The higher the viscosity grade, the thicker the oil is, which affects its lubrication ability, heat capacity and flow.
What is the best diesel oil?
Castrol Synthetic Diesel Oil. Castrol is one of the world’s top leading brands that manufactures and sells lubricants.
Why do European cars require special oil?
Resisting oil breakdown,which makes it last longer than conventional oil
Is 5W 40 synthetic?
Triax Fleet Supreme 5W-40 API CK-4 Full Synthetic Diesel Engine Oil, Friction Optimized and Boosted with Molybdenum & Nano-Boron, Superb Powerstroke Performance (5 Gallon Pail)