Turbo engine has higher amount of air and gas as the turbo pressures air in when the throttle is opened and the computer raises the amount of fuel injected to give the right air/fuel ratio. More pressure on the piston and internal bearings, that is how more power is produced out the engine with the same displacement. All diesels have turbos to produce the high compression necessary to generate ignition without spark and most take a full gulp of air all the time just vary the amount of fuel needed to provide requested speed/output so high compression pressure all the time.
Right, but I am talking about the engine, we are talking about engine oil. If we have the exact same 2.0L or 2.5L NA Skyactiv engine and they call for 0w20 in the US and 5w30 in Finland (I don't know where, just pulling a country out of the hat), that should tell you that both oils are acceptable for use.I'm specifically talking about the absolute fact that different areas of the world get different drivetrain options. The source is Mazda themselves.
Of course, this is for a 2014 Mazda 3 2.5 GT with Skyactive engine. I suggest you go by your owner's manual when deciding which oil to use.USA, Canada, and Puerto Rico: Use SAE 0W-20 engine oil. Except USA, Canada, and Puerto Rico, use SAE 5W-30 engine oil. Mexico: Use SAE 5W-30 engine oil. If SAE 5W-30 engine oil is not available, use SAE 5W-20 engine oil.
YES their is a difference. I recalled before purchasing my 2016 2.0L CX3 I read that the European versions had 14:1 compression and the N.A. version had 13:1 compression.Really? Care to expand on that? How are they different? I'd also be curious to know the difference between the N/A engine and the turbo version, besides the turbo. They are both the 2.5 engines, and if they have the same internals, why is it OK for one to use 5w30 dino oil (turbo), while the other says to use 0w20?
I'm not trying to be a smart Alec here. I genuinely want to know the differences, if there are any.
This earlier statement you made wasn't very specific to be honest.North America also gets different engines than other areas, hence the different requirements.
If your 2014 CX-5 GT uses ¾ quart every 5K miles, and the engine is a little louder, the thicker oil could help. But I’d use 5W-30 full synthetic oil like Mazda recommended in addition to 0W-20 oil worldwide (see post #15), especially you’re in Texas.I'll be switching to 0W-30 after winter. 63K miles on our 2014 CX-5 GT & I noticed the engine is a little louder. Not clattering, just not as quiet. Also it uses 3/4 quarts every 5K miles now so tolerances probably aren't as tight as new. I wouldn't use 0W-30 when new but now it shouldn't be a problem. Especially with our 110 degree Texas summers. I like Amsoil full synthetic.
Agree; It's hot most of the time, and 5W is plenty thin for our NTX climate "cold starts". 5w-30 synthetic in all my vehicles for 20 yrs, except the clapped out Ranger, which runs 20w-50.If your 2014 CX-5 GT uses ¾ quart every 5K miles, and the engine is a little louder, the thicker oil could help. But I’d use 5W-30 full synthetic oil like Mazda recommended in addition to 0W-20 oil worldwide (see post #15), especially you’re in Texas.