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Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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| | | | Joined: May 2001 Posts: 1,904 'Bolter | | 'Bolter Joined: May 2001 Posts: 1,904 | Thanks for the links.
I was mostly wondering about the higher temperature 40 (conven) dropping to 30 (blend) but back up to 40 (full synth). Perhaps if you shoot for a 10W cold viscosity by blending conventional (15W) and full synthetic (5W), the higher temperature viscosity just happens to be 30.
OK, I know I'm being a bit @n@l here but I like things to make sense.
1948 3/4-Ton 5-Window Flatbed Chevrolet 34 Years. Now with a '61 261, 848 head, Rochester Monojet carb, SM420 4-speed, 4.10 rear, dual reservoir MC, Bendix up front, 235/85R16 tires, 12-volt w/alternator, electric wipers and a modern radio in the glove box.
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