My friend is also using Mobil 1 5w30 advanced full syn (aka normal Mobil 1 flavor).. engine sounds smooth and quiet!
2025 Skyactive engine 2.5 NON turbo 0w20 vs 5w30
- Thread starter Bojo
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I've run both no issues. In fact I have both in the sump right now
Ahh.. Michigan where I am originally from..how long has he been running the Mobil 5w30? For how many miles
Ah you escaped the american version of the "great white north" lol.. joking aside, they've been running Mobil 1 5w30 since they got the used 16 CX-5, which was last year, so 1.5 years now. Oh miles, just under 10k miles now. I've been instructing them to do shorter oil change intervals because of the fuel dilution. Around 4% is what looks like it normal with the 1st gen CX-5 2.5 Skyactiv engine. You can look up my oil analysis in the used oil analysis forum.
yes escaping the road salt too which eats away these mazdas.. good info. and good to know. I believe that 2016 skyactive "Called for " 0w20 as well? I love it when people use 5w30 and totally disregard the CAFE nonsense. As. you can see Ive learned a lot since I originally posted this!
yes, the manual does say 5w20 for US and Canada but says 5w30 for Mexico and rest of the world. Glad you're seeing the CAFE and bureaucrats fur what they are, not true engineering.. Or the truth..yes escaping the road salt too which eats away these mazdas.. good info. and good to know. I believe that 2016 skyactive "Called for " 0w20 as well? I love it when people use 5w30 and totally disregard the CAFE nonsense. As. you can see Ive learned a lot since I originally posted this!
The reason the engine is louder on startup with 5w-30 is because in colder weather the heavier weights are harder to pump. So, 0w-20 in winter and 5w-20 in Summer if you must. The rest of your car will wear out before your engine.This is good to know!!!
I appreciate all these answers very much, and definitely more comfortable now about putting the 5w30 in.
Some non-scientific observations comparing having 0w20 in the car when new for the first 1000 miles or so, and now Pennzoil Ultra Platinum for a week now.
Car Seems to be quieter driving , and at lights, stops etc. This is quite noticeable.
Car seems a bit LOUDER at Startup than it did with the Mazda 0w20 . HOWEVER, it has gotten COLDER here in Texas, so not sure if that is the reason? I also know these Skyactives are known to be louder at startup, but there was a noticeable difference.
Thoughts on that? I know most wear occurs at startup but is the tradeoff for quieter running and idling worth it?
OR
Maybe a different 5w30 would be quieter? Or maybe it really is because of the "tighter clearances" when the weather is getting colder? Its only about 38 degrees, so not unbearably cold.
Maybe Im overthinking it?
Turns out mine is louder too. I am sure it is related to the colder weather lately but I also did a tire rotation when I did the oil change and my last 2 fills since the oil change I have lost 2 mpg. Like I said I am sure it is weather related but it felt strange to see the drop on the first and second gas fill after the change.
It Ain't the Pennzoil Ultra Platinum. It's the 5w-30 thicker, Pennzoil Ultra Platinum, oil weight you noticed on start up in the winter. You noticed it louder on start when you went from Pennzoil Ultra Platinum 0w-20 to Pennzoil Ultra Platinum 5w-30 in winter, right ? I've noticed the same thing in my Camry. That's why I use 0w-20 Pennzoil Ultra Platinum in winter in Texas. Heck I've seen 5 F* in Texas Winters.
It seems loud at startup, but honestly i know skyactivs are known for this, and i really didnt pay attenion when i had 0w20 (it was the Mazda moly oil) . Im actually going to do an oil change (still in the break in oil changes) and Im gonna put the mazda moly 0w20 in to compare, since there are some colder months remaining here in Texas. But I will go back to the 5w30 after this change. Gonna be interesting to see if it makes a difference.. I haven't seen 5 degrees where I am at in Texas.. the lowest it gets here is 20F..... Lately its been in the 60-s 70-s!!
I found a gas station relatively close to home that sells 100% gas. I will give it a try a few times.
Here in Washington you can get non ethanol gasoline at Cenex. I have one 6 miles from the house that is pretty much on my Mazda's diet.
Cenex has top tier gas, also to notice is their Maxtron engine oils, made by Cenex (CHS) is a good engine oil too, does anyone on here use this oil??
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- Nov 30, 2021
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Thoughts on switching from 0w-20 to 5w-30 for a month of highway driving in hot Florida? She's had 0w-20 for 89,000 miles, showing some fuel dilution, so trying thicker oil for an extended road trip with plenty of 80s and 90s ahead.
My mechanic was concerned about the heavier oil with the Variable Valve timing on the 1.5 L Skyactiv engine. He expects my Check Engine Light to go on...
My mechanic was concerned about the heavier oil with the Variable Valve timing on the 1.5 L Skyactiv engine. He expects my Check Engine Light to go on...
In every other country except USA, the Skyactiv non-turbo engines can run anything from 0W-20 to 10W-30 by the book, and plenty of people in Australia run 5W-40s even with no problem. I run a 5W-30 in these at a minimum.
I hear that about Austrailia and caught a few posts somewhere (cant remember where) where a few people were running the 5w40 in these skyactiv engines as well!
Let us know if that happens. I know on my skyactiv 2.5 NA i used 5w30 with no issues on one of the break in oil changes . I DID however, go back to 0w20 Mazda Gf6 oil for the winter but plan on going back to 5w30-(Pennzoil Ultra Platinum or Amsoil probably) for the next oil change I think, I also plan on some long road trips in the hot summer.