What oil to use in 67 and 05 trucks?
I have a 67 with a new rebuilt 383 stroker that I use valvoline 30 wt in and I just bought new 2005 SWB 6cyl 5sp truck and its about time for its first oil change. I was going to use Valvoline 5w30 with an A/C delco filter. I am unsure about the advantages of synthetic oil in either of these trucks. I bought this new truck just as a commuter vehicle to work, It had a sticker of $19,800 I got them down to $12,700 and I had about $2,250 on my GM card credit so it cost me $10,500 ! I couldn't buy a used one for that, hell my 67 is worth more than that ! Thanks
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