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**TJ's Chevy** · 07-16-2015, 11:20 AM

For a straight 6 run Straight 30 with a zinc additive. In the cooler times of the year run a 10w-30 with additive.

07-16-2015, 11:20 AM	#18
TJ's Chevy Post Whore Join Date: Mar 2013 Location: Southern Oregon Posts: 10,401	Re: Which grade oil should I use for my motor? For a straight 6 run Straight 30 with a zinc additive. In the cooler times of the year run a 10w-30 with additive. __________________ 1966 Chevy C10 "Project Two Tone" http://67-72chevytrucks.com/vboard/s...d.php?t=596643 1964 GMC "Crustine" semi-build:http://67-72chevytrucks.com/vboard/s...d.php?t=665056 My youtube channel. Username "Military Chevy": https://www.youtube.com/channel/UC_h...fzpcUXyK_5-uiw