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CASTROL GTX Ultraclean 5W-30 Synthetic Blend Motor Oil 160 fl. oz. 15A66D - The Home Depot
GF-6 oil, and it's importance to Traverse Owners.... | Traverse Forum
Castrol 06006-6PK GTX Magnatec Green 0W-20 Motor Oil - 6 Quart, (Pack of 6) | eBay
Castrol GTX Full Synthetic 5W-20 is suitable for use in automotive gasoline and diesel engines where the manufacturer recommends an API SP, ILSAC GF-6 or earlier specification 5W-20 lubricant. Motor Oil &