Anyone run 5w20 oil?

[93cbh23]

it's slightly more spread out through the engine, but shouldn't reduce pressure noticeably. you can always add an extra half quart if you are worried about that happening.

i'm calling bullshit

[93cbh23]

hey guys here's something no one has said yet.

ya know the manufactuers and common knowledge viscocity charts? follow them they weren't just created to take up space in your manuals. it's called r&d by engine oil manufactuers just a thought. just cuz you think whatyou are running is the good shit you are probably wrong

[Losiracer2]

just run 5w30 in the winter and 10w30 in the summer. 5 is thinner than 10 so that's why its good in the coldest of temps. in the summer time when it's not needed, run the thicker 10w30 oil. the first number means the weight of the oil when the engine is cold and the second number, after the w, means the weight of the oil when the engine has warmed up.

[SteveB]

just run 5w30 in the winter and 10w30 in the summer. 5 is thinner than 10 so that's why its good in the coldest of temps. in the summer time when it's not needed, run the thicker 10w30 oil. the first number means the weight of the oil when the engine is cold and the second number, after the w, means the weight of the oil when the engine has warmed up.

lol so why run the 10W in the summer, if it's only thicker when the engine is cold?

[Losiracer2]

lol so why run the 10W in the summer, if it's only thicker when the engine is cold?

because the outside environment is not as cold as in the summmer time so the oil wouldn't need to be as thin to start the car. Think about it, in Dec. some places are below zero sometimes, in June or July, most places are above 70 at night. All i know is the lighter weight oils are better for colder climates b/c of their lubricating properties when cold. when it's warm outside, you wouldn't need that low of a viscosity.

[SteveB]

because the outside environment is not as cold as in the summmer time so the oil wouldn't need to be as thin to start the car. Think about it, in Dec. some places are below zero sometimes, in June or July, most places are above 70 at night. All i know is the lighter weight oils are better for colder climates b/c of their lubricating properties when cold. when it's warm outside, you wouldn't need that low of a viscosity.

Thank you, I'm quite aware of all that.....but you haven't answered my question.

Why do you feel you require a stiffer start up viscosity in summer?

[Losiracer2]

i just do it mainly b/c my car leaks a bit here and there, so the thicker oil when cold doesn't get through the seals as easy. I guess you dont NEED to move to the thicker oil but it just helps in my situation since my seals aren't 100%. And since I live in AZ, the thicker oil is better suited for the higher temps...It rarely goes below freezing at night in the winter.