FYI: '13'-15 just calls for 80W-90 for rear diff & transfer which is a lot cheaper. I used a synthetic Amsoil and since I plan to change every 25-30K miles I don't think I would really get much benefit out of the SG1 in my '15.
NB1 Navigation Updates (985 NEW-2/2017) / Why Mazda moly oil? - Mazda TSBs / My Misc add-ons / Mazda owners manuals / SkyActiv Oil Analysis Thread
• '15 CX-5 GT 2.5L w/tech package & i-ACTIV AWD - Liquid Silver Metallic (04/2014 build-07/2014 delivery) - 34.5K Miles
• '12 Lexus GX 460 Premium (Toyota Land Cruiser Prado 150) / Torsen with ATRAC AWD
• '07 Infiniti G35x w/tech (Nissan Skyline V36) / ATTESA E-TS AWD
• '00 Jeep Wrangler 4.0L TJ - 5 speed / NP231 PT Transfer Case
• '02 Nissan Maxima GLE (Nissan Cefiro)
• '96 Ford Explorer 5.0L / AWD - Borg Warner 4404 viscous coupling
• '96 Mazda Protege LX (Mazda Familia (BH))
• '87 Nissan Maxima SE (Nissan Bluebird U11)
• '84 Mitsubishi Cordia Turbo (2-stroke motor would probably use less oil/150 miles per quart)
• '82 Buick Skylark (JUNK)
I certainly can't dispute either way if it is better or worse. Unfortunately not a lot of info about this oil including the weight. I am comfortable with the protection my Amsoil is giving me.
I would be most concerned about those that haven't changed fluid since mine was apparently in an under-filled condition on rear diff and this area being prone to heat build-up I wouldn't want a low fluid condition for that matter alone. I remember a thread here somewhere where someone even overheated it playing in the snow.
EDIT: There is a heat sensor tied into the rear diff.
I like getting myself to a known state with fluids and levels.
I would have two on hand... my front transfer was spot on but the rear diff took around 2/3 quart IIRC
Oddly, a few weeks ago I went to order the mazda 80w90 and it was out of stock and backordered. And had been for a minute. I wonder if they were doing some change to it considering it's not listed for the new cx5s
I ordered some of the Mazda SG1 oil specified for my CX-5 and I was just now reading the warning on the back of the bottle.
It seems that this oil contains Tricresyl phosphate and you shouldn't drink it. Good to know.
I didn't know what Tricresyl phosphate was so I looked it up.
Some type of friction modifier it seems. Nasty stuff.
My guess is the Mazda SG1 is just Amzoil or Redline 75w-90 synthetic, or a similar.
I gotz ya 'long life' oil rights here! lol (probably be ok though)
Last edited by ctbale; 01-16-2017 at 11:43 PM.
I finally crawled under my CX-5 and checked the rear differential fluid. I had to add ~4oz to bring it up to the correct level.