Can I Mix 15w40 With 20w50?

Can I mix 20w50 with 10w40?

Re: 20w50 and 10w40 mix The filter holds a good amount of oil, so yes, you will be mixing two different grades of oil which can lead to it congealing and cacking up all your oil ways..

Can I mix 15w40 with 5w30?

No, you won’t blow a head gasket, but 15W40 is too heavy an oil to use where 5W30 is required. Besides, most 15W40 oils are gor diesel engines.

Is 20w50 good for high mileage?

Considerations. The viscosity level of engine oil 20W50 is geared toward racing engines, as opposed to high-mileage engines, that run extremely hot and need heavy load operation. … Since its viscosity is so great, it can drag down the functioning of the crankshaft, resulting in less horsepower.

What is 20w50 used for?

SAE 20W50 Synthetic Motor Oil. NEO SAE 20w-50 is designed for high performance engines of all kinds, and for any engine that is pushed to the limit of performance and temperature. Excellent for trailer towing in high temperatures and for racing engines, in any engine that can use this viscosity grade.

Which is better 15w40 or 20w50?

Can I use 20w50 oil as a top up to my 15w40 engine oil? If a non-synthetic oil has 2 to 4.500 Mil (mixed driving), then 20w-50 top-ups are better than 15w-40 for the purpose of ‘staying in the grade’ avoiding the risk of thining the oil too much, especially for summer driving!

Is it OK to mix 10w30 and 20w50?

If you mix viscosity grades such as a 10W30 low-viscosity oil and a 20W50 higher-viscosity oil, it is reasonable to expect that the resulting product will have viscosity characteristics which are thicker than the 10W30, but thinner than the 20W50.