What are the different grades of engine oil?
These are SAE 0W, 5W, 10W, 15W, 20W and 25W motor oils. Their viscosity grade is low, meaning they are particularly fluid lubricants. Each category is defined by its viscosity at a given temperature (from -10°C to -35°C, depending on the grade).
Which engine oil grade is best?
It’s best to follow the recommended oil grade, as an engine oil with ’40’ grade is thicker. That said, it can survive better in higher temperatures. ACEA Rating – The ACEA Rating of engine oil is its lubricant ratings. Some examples of ACEA Rating include A5/B5, A3/B4, etc.
What 10w40 means?
The designation “10W-40” indicates a multigrade oil that is toward the low end of the SAE scale in cold weather, but at the upper end in hot conditions. 10W-40 oil is therefore good for a wide range of weather conditions.
Can I use C3 oil instead of A5?
ACEA C3 will be fine.. You wouldn’t want to run A5/B5 in a car that had a catalytic convertor but the other way around is fine. Make sure weight and blend is right (5W-40 fully synthetic IIRC?) and you’ll be fine.
What does 10W30 mean?
The 10W30 designation on engine oil means that the viscosity of the oil is rated at 10W when an engine is cold and 30 when the engine is hot. This is different than an oil labelled 5W30, which has a thinner viscosity when the engine is cold at 5W.
What is 10W-40 oil used for?
The synthetic 10W-40 flows easily and still maintains enough viscosity to protect piston skirts and bearings when it gets hot. The improved temperature stability of synthetics makes them a better choice for race engines and serious high-performance engines.
What does C3 mean on oil?
C1 Low SAPS (0.5% ash) fuel efficient. C2 Mid SAPS (0.8% ash) fuel efficient, performance. C3 Mid SAPS (0.8% ash)
Which is better 10W40 or 20W50?
Is 10w40 good for high mileage? 10W40 is not better than 20W50 for high mileage. The difference between 10w40 and 20w50 is simply that the latter is thicker. As far as gas mileage goes, no oil will improve your gas mileage by changing from 10W40 to 20W50 or vice versa.
What is 20W50 oil used for?
20W50 motor oil is suitable for warmer climates, where the higher temperature causes the oil to thin. It is also useful for vehicles subject to hot temperatures and for those used for high-stress activities such as hauling or pulling trailers.
What is 20W-40 in engine oil?
For example; 20W-40 is an SAE grade where 20W (Winter) is 20-weight/viscosity of oil for colder temperatures and 40 is 40-weight or oil viscosity at low temperature.
What does A5 mean on Castrol oil?
A5 Combines A1 fuel economy with A3 performance. B1 Fuel economy diesel. B2 Standard performance level (now obsolete) B3 High performance and/or extended drain. B4 For direct injection car diesel engines.
What oil numbers mean?
The first number in the oil classification refers to a cold weather viscosity. … The higher number, following the “w” refers to hot weather viscosity, or how fluid your oil is at hot temperatures. The higher the number, the thicker the oil at a specified temperature.