[dieselgg]

Hi,

I recently discovered that Castrol now has the Edge Syntec 15W40 with BMW LL-01 approval. I was unaware that it has been around for a while now. Anyways, currently I am using the Syntec European formula 0W30 and use to use the 0W40 from Mobil 1. So I wanted to get some feedback on it for using it year round especially for here in Canada. I searched this sub-forum but no info came up.

Any feedback would be appreciated.

[galahad05]

Any particular reason to try the 15w40? If I were up in Canada, I personally would prefer the zero weight oil--flows better cold and thus minimizes cold-starting engine wear.
Hell, I'm on Long Island, which has pretty moderate winters compared to Toronto, and I would stick with the zero weight Mobil.



All that said, I usually let my dealership do it (got tired over the years wrenching on my own cars, so I just don't bother any more), and I'm pretty sure they use a 15 weight. I do have a case of the Mobile 0w40 for top-ups though.

[dieselgg]

Thanks for replying galahad05. What about using 5W40 for the summer?

[drewnel22]

Originally Posted by galahad05

Any particular reason to try the 15w40? If I were up in Canada, I personally would prefer the zero weight oil--flows better cold and thus minimizes cold-starting engine wear.
Hell, I'm on Long Island, which has pretty moderate winters compared to Toronto, and I would stick with the zero weight Mobil.



All that said, I usually let my dealership do it (got tired over the years wrenching on my own cars, so I just don't bother any more), and I'm pretty sure they use a 15 weight. I do have a case of the Mobile 0w40 for top-ups though.

I agree with this. I would use a 0W for Canada especially during this time of the year.

Now if you look at the table labeled Winter or "W" Grades, you can get valuable information on how the W or winter grade viscosities are measured. Basically, as shown by the chart, when the oil is reduced to a colder temperature it is measured for performance factors. If it performs like a SAE 0 motor oil at the colder temperature, then it will receive the SAE 0W viscosity grade. Consequently, if the motor oil performs like a SAE 20 motor oil at the reduced temperatures (the scale varies - see the chart), then it will be a SAE 20W motor oil.
If a motor oil passes the cold temperature or W (winter grade) specification for a SAE 15W and at 210° F (100° C) flows through the viscometer like a SAE 40 motor oil, then the label will read 15W-40. Getting the picture? Consequently, if the motor oil performs like a SAE 5 motor oil on the reduced temperature scale and flows like a SAE 20 at 210° F (100° C), then this motor oil's label will read 5W-20. And so forth and so on!
I can't tell you how many times I have heard someone, usually an auto mechanic, say that they wouldn't use a 5W-30 motor oil because it is, "Too thin." Then they may use a 10W-30 or SAE 30 motor oil. At engine operating temperatures these oils are the same. The only time the 5W-30 oil is "thin" is at cold start up conditions where you need it to be "thin."

Got this info from ^^^: http://www.upmpg.com/tech_articles/motoroil_viscosity/

[sy2767]

Now is a good time to get Castrol 0W30, CT has it on sale! Every year around this time I change my oil to 0W30 and I've never had an issue starting,no block heater and I live where the temp gets down to -40 Celsius! That's a far cry from what your temps are in TO so I'm sure it will serve you well.

[dieselgg]

I just realized I had huge typo in my threads. I meant to type 5W40. Anyhow, thanks for the tutorial. I certainly get the picture now. I can go with 5W40 as it covers the same low temp range as 0W30. Toronto never sees anything below 30C.

[mike@x-ph.com]

I use Castol European formula 0w30