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I think Ill change it this spring then with the Mobil 1. I use Castrol Syntec 5W30 in both my Aurora and the wifes Pontiac Montana, change it every 5,000 miles in both vehicals and use Fram Tough Guard oil filters. I wish Castrol made a synthetic tranny fluid but I couldnt even find the regular Castrol tranny fluid the last time I changed the fluid, thats why I used the Valvoline Max-Life. Oh well, anything that keeps my engines and transmisions running longer is worth a little extra money in my books.
BKVic
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