Thread: Few questions about engine oil

Autozone, Oreilly and other auto parts store usually have oil and filter deals in their sales ads. You may want to look at them.

5w30
The first number represents what the oil viscosity is like when cold.
The second number represents what the oil viscosity is like when hot.

Originaly all oil was manufactured and was only one number or viscosity. They have since figured out how to add stuff to the oil so that it is like a thinner oil when cold and a thicker oil when hot. Thinner oil is much easier to suck into a oil pump, think of sucking a thick milk shake. Multi viscosity oil is formulate to suck easier into the oil pump when cold but still provide the correct viscosity when hot. It's kind of a win win.

If your in Canada or any colder climate I highly recommend 5w30 for winter. Recently they have come out with 0w20 oils but I don't use these because the oil is not thick enough when hot for our engines.

I got 5l of Quaker State 5w30 with a same brand filter. Changed it yesterday. Thanks for all guys.