That's only because Mazda has entered an agreement with Castrol. If it were me, I would exclusively use the Mazda 0-20. It's pretty inexpensive, and its a GF-5/Sn with tons of moly and boron....220 VI to boot.
Virgin Mazda 0w-20 w/moly Idemitsu SN
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I have already notified my dealer's SA who does not stock it (they only stock the old Mazda 0/20 version), but can get the GF5 at some crazy high price as special order, that I should be allowed to bring my own Mazda GF5 0/20 oil when they service my wife's 2014 Mazda 6 in the future.
He agreed.
...Now, where's the best online price for this oil? 
Drive to Raleigh. I get mine in Greensboro or Asheboro
I would drive to Raleigh, but I just can't trust dealer parts people anymore. I asked the LOCAL dealership and the SA says yep we have it, and of course they NEVER had it, as I found out after the oil change on my wife's 2014. I am just afraid the other dealer SAs are the same, and I would drive from Fayetteville to Raleigh for nothing...
I have this Mazda w/Molly oil in my 2013 Accord I4 but the OLM just turn to 40% so it will be a while before I changed it and do a UOA.
Anyway, I asked my local Mazda parts department about Mazda switching to Castrol. He said he was unaware of it but would not be suspired as Mazda and been doing things to lower costs.
I picked up 5 quarts of the oil for my upcoming change. List price was $8.60/quart and he sold it for $7.31/quart.
Ran similar stuff in the Subaru. Nothing special except on paper. The oils runs Really thin and noisy. QSUD or PU or Similar will do you just fine. Ow20 "reallyZ" dont meet GF5 for piston deposits - they get a pass
Originally Posted By: ARCOgraphite
Ran similar stuff in the Subaru. Nothing special except on paper. The oils runs Really thin and noisy.
TGMO ran noisy in my Crosstrek....just changed it out with Royal Purple and engine does sound a bit quieter
Originally Posted By: Blue_Goose
TGMO ran noisy in my Crosstrek....just changed it out with Royal Purple and engine does sound a bit quieter
What are dealers charging for this wonderful oil?
Is the Mazda 0w20 with moly in the US and Canada identical?
I could get the mazda 0w20 with moly from my local dealership for under $7 per liter... I think its a pretty good deal!
Anyone have a picture of the new Mazda 0w20 with moly?
I posted a pic of it in a thread awhile back. Just search it.
Originally Posted By: Eddie
Anyone have a picture of the new Mazda 0w20 with moly?
I recently did a UOA for this oil.
http://www.bobistheoilguy.com/forums/ubb..._I4#Post3356592
Thanks Mike.
Just for the know.
I contacted Idemitsu Canada, they say the MGMO in Canada is Idemitsu base stock but Petro has to be the blender, Transport Canada, Mitsu, Idemitsu and Petro Can were parties to the less than ideal answer.
Mitsu told me (all over the phone) Transport Canada has really strange rules with OEM blended oils.
Idemitsu wanted to supply a much more robust oil, Transport Canada put a stop to it and made Mitsu deal with Petro Can.
Politics in Oil sucks. Especially when the end product could have been much better.
This what I was told by Mitsu and Idemitsu. Over the phone.
Sorry had Mitsu on the Brain.
Mazda not Mitsu.
Originally Posted By: Koz1
Just for the know.
I contacted Idemitsu Canada, they say the MGMO in Canada is Idemitsu base stock but Petro has to be the blender, Transport Canada, Mitsu, Idemitsu and Petro Can were parties to the less than ideal answer.
Mitsu told me (all over the phone) Transport Canada has really strange rules with OEM blended oils.
Idemitsu wanted to supply a much more robust oil, Transport Canada put a stop to it and made Mitsu deal with Petro Can.
Politics in Oil sucks. Especially when the end product could have been much better.
This what I was told by Mitsu and Idemitsu. Over the phone.
I thought it was so strange I had to post it.
Maybe there are some new rules that only came into effect recently, Im guessing.
Idemitsu wanted to do it supply the Moly GF-5 but was blocked.
Thats all I know.
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