From my Owners Manual:
SKYACTIV-G 2.5T
Use SAE 5W-30 engine oil.
Mazda Genuine Oil is used in your Mazda
vehicle. Mazda Genuine 5W-30 Oil is
required to achieve optimum fuel
economy.
The manual does not specify syn, so I'm under the assumption that it doesn't matter. I do use full syn in all my vehicles, simply because it makes me feel better.
Come on.. don't put dino oil in a turboh engine it's more prone to coking e.g carbon deposits. The different between 5qt of dino and 5qt of full syn is a couple of $ at the least, not even worth it.
Jump to conclusions much? I had no intention of putting non-synthetic in. I was just trying to clarify something from the manual.
Not really you, but anyone considering this (since many will view this). I see people on the cx5 club asking about adding dino oil all the time.
Most 0W-20 oils are full synthetic. But there're plenty of 5W-30 oils which are conventional or blend. If you change oil at Mazda dealer, make sure to ask for "full synthetic" 5W-30 oil for your 2.5T turbo engine as some of the OEM Mazda 5W-30 oils are dino. Chris_Top_Her was right. There're many cases in the past people were using conventional oil on the turbo engine which caused oil sludge issue because conventional oil was cooked in the very hot turbo charger. VW's 1.8T even had class action law suit because of this.I was just trying to make sure they make syn in 5-20. Only synthetic I ever used was always 0 - XX. My 16 Touring takes 0-20 and my wife's previous CR-V took the same.
Most 0W-20 oils are full synthetic. But there're plenty of 5W-30 oils which are conventional or blend. If you change oil at Mazda dealer, make sure to ask for "full synthetic" 5W-30 oil for your 2.5T turbo engine as some of the OEM Mazda 5W-30 oils are dino. Chris_Top_Her was right. There're many cases in the past people were using conventional oil on the turbo engine which caused oil sludge issue because conventional oil was cooked in the very hot turbo charger. VW's 1.8T even had class action law suit because of this.
Yeah for turbo engine, use only full synthetic oil.
Heck, make sure they know that it's a turbo and it takes 5w-30.
...
If only they would make it more obvious, like posting the oil requirements on the oil filler cap. (attn)
you can use any 5w30 that meets the required spec. However; i would use a synthetic oil in my turbo engine.
Rotary engine is a different animal, and turbo engine is different from naturally aspirated engine. Turbo engine has very high temperature on turbo charger, hence a full synthetic oil is more suitable to avoid sludge issue. Besides, full synthetic oil usually is more stable and can be kept in the engine for longer OCI.Just to stir up the pot a little bit...
I only use dino oil in my twin turbo RX-7 because rotary engines burn oil as part of the combustion process and a lot of synthetic oils leave ash deposits when you burn them. Also, once you use Synth, it's not too smart to switch back to natural stuff because they're so different at a molecular level.
10-30 Castrol GTX since the 90's. No problems ever at 8k+ rpms. (drive)