Castrol vs Valvoline

Castrol GTX full synthetic, 5000 oci or 6 months, whichever comes first. Otherwise, if you are going to do the forever oci thing, use the Castrol Edge EP, gold bottle and change every 10,000 miles max or 1 year, whatever comes first. Use a premium filter. There is my opinion.
GTX Full Syn seems like a pointless product right now, considering on the shelf at Walmart it is currently only one cent cheaper than black bottle Edge per jug. Edge is the higher tier product so why not choose that?
 
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