Couldn't fing Mobil 1 0-40, so went with.....

[Espen]

I just did an oilchange and went from penzoil 5W30 to Castrol Edge 0W40.

I must say that i got much more noise and valve ticking now. In my climate the temperature changes from down to -25 in winter and +27 in summer, is there an oil i can use all year?

Or should I use 0W40 oils in winter and 5Wxx oils in summer?

[t_marat]

What a difference between 1W-40 and 0W-40? I thought 0W-40 should be more desirable (higher quality) as it has lower freezing temp, rest being the same.

[Espen]

Does a 1W40 exist?

thought there only was intervalls of 5, like 0,5,10,15,20 and so on.

[t_marat]

New grade of oil, invented by me

Sorry, mistake. Meant to say 5W-40

[BillionPa]

redline 10W30 and 5W40 have the same pour point, the 5 and 10 part is the viscosity range at 40C (not freezing!!!)

[Espen]

redline 10W30 and 5W40 have the same pour point, the 5 and 10 part is the viscosity range at 40C (not freezing!!!)

In my climate the temperature changes from down to -25 in winter and +27 in summer, is there an oil i can use all year?

Or should I use 0W40 oils in winter and 5Wxx oils in summer?

[t_marat]

Any difference why a 5w-40 would be more desirable that 0w-40?

[Espen]

A 5w50 is better for hotter climates, the 0w40 gives you better protection in cold winters.

I`ve been told that the 0w40 is too thin for summer use, so that it will cause a very low oil pressure..

I am experiencing valve rattle after i went from 5w30 to 0w40.

Thats why I am asking.

[t_marat]

currently its +30C (+86F). From time to time it goes as high as +45C (113F).
is 0w-40 suitable for this climate?

[Dave M]

its not available here in the US. So i use 0w40 instead.
Note: How expensive is the 5w50 in Canada?

The M 5-50 was $38 CAN or @ $34 USD for 4.4L.

Judging by your (and other) responses, this grade should be fine.

Thanks All

Dave M