Royal Purple? Heard lot of good thing's about them.
Max ATF. It’s synthetic.
Have not actually tried it jet. But they say it’s the best.
Mats
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78 Firebird. 0,30 400 cid, speed pro domed 0,125. Xe 274. Eagle H rods. fully balanced. ported 6x heads. Rpm inntake . 800 edelbrock. prepped th350 whit 3000 stall. 
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