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great stuff. i used it in my dirt track car and it helped keep the temps down, and the gear fluid actually conditions the gears to reduce wear. well worth the price.
I use in my Altima - works great, some altima forums guys did a test and send the oil samples before and after to Blackstone Labs and the oil is proven to have provide less deposits and wear than anything else.
Blackstone Labs
416 E Pettit Ave
Fort Wayne, IN 46806