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Labor Day Putting down your wrenches or time for
MORE wrenching? 
Plenty of places to share. | | Click on image for the lowdown. 
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Mod | | | Forums66 Topics128,009 Posts1,055,291 Members48,419 | | Most Online14,466
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: Mar 2012 Posts: 211 'Bolter | | 'Bolter Joined: Mar 2012 Posts: 211 | Getting ready for the first oil change in the 261. Im sure this topic has been covered somewhere here as to which oil to use, I'm thinking of useing Shell Rotella 15-40, I use this all the time in my 2001 cummins,1970 blazer and I'm happy with it. On the gallon jug, it has all the special ansi codes for every diesel out there, but says nothing about the zinc content. Will this oil be OK for a 261? | | | | | Joined: Jun 2006 Posts: 693 'Bolter | | 'Bolter Joined: Jun 2006 Posts: 693 | i use it my 235, and add zinc. | | | | | Joined: Aug 2012 Posts: 402 Shop Shark | | Shop Shark Joined: Aug 2012 Posts: 402 |
http://s1055.photobucket.com/user/baldybenny/library/ 1936 1.5 wrecker,1937 gmc coe,1939 Chevrolet coe,1942 4x4 coe, 1942 coe,1946 dump,1947 2 ton dump,another 1947 2 ton dump,1950 coe,1967 c30,1937 cat 22,1936 Chevrolet 5 window foremans coupe, 1914 ford speedster.
| | | | | Joined: Sep 2001 Posts: 29,269 Bubba - Curmudgeon | | Bubba - Curmudgeon Joined: Sep 2001 Posts: 29,269 | That is what I use. I get the diesel formulation that has/had a highher level of ZDDP.
| | | | | Joined: Oct 2006 Posts: 1,847 'Bolter | | 'Bolter Joined: Oct 2006 Posts: 1,847 | this topic gets covered very thoroughly about once a month. | | |
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