oil weight 15-40 or 5-40
#16
03-13-2012, 10:05 PM
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#18
03-13-2012, 11:19 PM
Up here in Canada 15W40 is only recommended if doing a large amount of towing in temperatures above 30 C (86F). 5W40 covers it all. If you are going to be in a really cold spell, 0W40 is also an option. I'm gonna have to dig up that letter. I actually do my oil changes every 5000KM (3100 Miles). Have always done that, with every vehicle I own.
#19
03-14-2012, 08:33 AM
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03-14-2012, 09:42 AM
#22
03-14-2012, 06:12 PM
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Up here in Canada, we are not able to run 15w40 in winter. Cold is -45 C which is about -40 F. We must run 10w30 or synthetic 5w40 in winter I am running 5w40 syn year round, cause the shoulder seasons it's really to cold to crank her up with 15w40 in it. There is a cost to this in terms of oil change costs. I am changing at 7500 km or 5000 miles on the button. My truck has all original except batteries, tires, shocks, windshields, just over 100k miles. I think the synthetic is really a lot better on cold starts, cold weather, and still provides all the towing protection at any temperature.
#24
03-15-2012, 05:23 AM
I live just down the road from ya in Ft. Smith. Since moving here I've run 15w40 in the summer and 5w40 in the winter although this past "winter" I could have run 15 the whole time. Injectors just like the 5w40 MUCH better. I know zhilton runs the mystic in his 6.0 year round.
#25
03-15-2012, 07:47 AM
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