Is Thicker oil better for high mileage cars?
This is a practical method to improve oil pressure in an older, high-mileage engine.
The slightly thicker oil film from the heavier base weight oil – 10W – can help protect worn engine bearings as well..
Which oil is best for old cars?
When you’re choosing the best oil for older cars or high mileage engines, there are several criteria you can look at.Pennzoil High Mileage Conventional Motor Oil. … Castrol GTX Part-Synthetic High Mileage. … Valvoline MaxLife High Mileage Synthetic Blend. … Mobil1 High Mileage Engine Oil. … Amsoil Premium Protection Motor Oil.More items…•
Should older cars use thicker oil?
A: Yes. This is a practical method to improve oil pressure in an older, high-mileage engine. The slightly thicker oil film from the heavier base weight oil — 10W — can help protect worn engine bearings as well.
Can I put 5w30 instead of 5w40?
Takeaway. If you are racking your brain to choose between 5w30 and 5w40, we recommend you go with 5w30. However, if it is too expensive or not available for use, you can always go with the 5w40, which is just as good and will not cause any damage to the engine parts.
Which is better 5w 20 or 5w 30?
The main difference between 5W-30 and 5W-20 motor oil is that the latter gives a slight bump in fuel efficiency. When used in a vehicle’s engine, 5W-20 oil creates less friction due to its thinner viscosity (or thickness), meaning it drags less across engine parts like the crankshaft, valvetrain, and pistons.
Should I put synthetic oil in my old car?
The synthetic oil could leak out and the vehicle could burn or lose oil. … Because synthetic oil does a better job of cleaning out sludge, it could remove deposits that are acting as seals. It’s not accurate to say that you should never use a synthetic oil in an older car.