Best oil for winter
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Senior User
Joined: May 2003
Posts: 110
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Best oil for winter
What is the best oil for winter operations for a 7.3? As it is starting to freeze at night, my PSD is starting awfully hard when I am unable to plug it in (when I work a night shift or a 24 hour shift). I am not certain if one or both of the batteries is going bad or the oil is too thick, maybe both.
Thanks
Thanks
Junior User
Joined: Aug 2003
Posts: 90
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From: New Hanover, PA
I was so surprised when I recently did a "Freezer" test on the Wally World Full Synthetic 5W-30. It was as thick as the dino Havoline 5w-30 that was in the freezer next to it. I thought that because it was "Synthetic", it would remain thinner. Not the case. OF course this was not a scientific experiment, but it was really interesting...
I think I will continue to use the dino....
I think I will continue to use the dino....
Post Fiend
Joined: Jun 2001
Posts: 5,228
Likes: 5
From: Running Springs CA
I also did a "freezer test" recently just for giggles at 0F.
10W-30 Pennzoil "Purebase" flowed best. So much for those who still insist that "it has wax in it".
10W-40 Castrol Syntec was next, almost as good as the dino Pennzoil, but still second place.
15W-40 Chevron Delo 400, almost as good as Syntec at 0F, you may have to get colder to see much difference.
30 Coastal non-detergent, solid rubber with white streaks of wax.
Conclusion, Group II dino is more than adequate for single digit temperatures.
Jim
10W-30 Pennzoil "Purebase" flowed best. So much for those who still insist that "it has wax in it".
10W-40 Castrol Syntec was next, almost as good as the dino Pennzoil, but still second place.
15W-40 Chevron Delo 400, almost as good as Syntec at 0F, you may have to get colder to see much difference.
30 Coastal non-detergent, solid rubber with white streaks of wax.
Conclusion, Group II dino is more than adequate for single digit temperatures.
Jim
