I thought the manual recommended Mazda Moly or Castro Oil only?
You should be able to use any 0W-20 to maintain warranty as per the Magnuson-Moss Warranty Act.
This is true as long as all 0W-20 oil meets Mazda's minimum specs (which is not necessarily a given). A better way to say it is:
You should be able to use any 0W-20 that meets the manufacturers minimum specification to maintain warranty as per the Magnuson-Moss Warranty Act
Is there any list of the oils that meet Mazda's specs?
Since the Mazda oil is nearly unobtainium, does that leave Castrol as the only store bought option?
Does Mazda have more than one synthetic oil? Our dealer uses Mazda brand full syn for oil changes, GF5 #0000-23-0w20-LT. No where on the bottle does it say Moly. the parts guy had no idea what I was asking. Googling doesn't bring up an answer. Wondering if anyone has more info on this oil? This mazda stuff cost $6.15 for a 1L jug, so why would I go buy Mobil-1, Castrol Edge for more $$$?
As for the original post, $23 for a jug is great. But up here you may get lucky and find something on sale for $35, regular is app $51-52 per jug.
Any parts department of Mazda dealers will have Idemitsu made Mazda Moly oil available with part number 0000-G5-0W20-MQ. You can always order it online from Amazon too but shipping is expensive. Like MikeM. said, the best way to get it is order the oil change kit (Mazda SKYACTIV TECHNOLOGY Oil Filter, Drain Plug Washer and 5 Quarts of Mazda 0w20 Moly Oil) online for $39.32 at Med Center Mazda. Just make sure to order three for over $100 to avoid expensive shipping.Since the Mazda oil is nearly unobtainium, does that leave Castrol as the only store bought option?
Like MikeM. said, the best way to get it is order the oil change kit (Mazda SKYACTIV TECHNOLOGY Oil Filter, Drain Plug Washer and 5 Quarts of Mazda 0w20 Moly Oil) online for $39.32 at Med Center Mazda. Just make sure to order three for over $100 to avoid expensive shipping.
The bottle of Mazda Moly oil says: "Includes high levels of MOLYBDENUM (Moly) which reduces wear, especially at low temperatures where the anti wear agents are inactive".