Skyactive Engine Programmed differently in US?
- Thread starter Bojo
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I wouldn’t let what he said deter you from using 5w30 in your Mazda. If you recall, nowhere in that video did he say that you can’t use a higher viscosity if a lower one is recommended. He skirted around answering that question.
I only watched that video because it was a short that popped up in my feed. If it was a long video, I wouldn’t have bothered. He takes too long to get to the point and says, “That’s all I’m gonna say about that” at the end of whatever point he’s trying to make.
I’m in no way saying that he’s not a good Toyota Tech, but YouTube has a way of making these guys chase views and likes by babbling on about everything. (Even things they’re not 100% sure of.)
He is outright wrong. He said in other countries its programmed for higher viscosity - but as I have shown in post #37 the same engine here that specs 0W-16 in Australia specs 0W-16 all the way to 15W-40. No specific viscosity. His entire logic is flawed.
He also keeps calling it an "electric oil pump". There not there chain driven and a actuator controls the charge volume.
I agree with you. That’s why I edited my first post on this subject to say, “I’m not saying I believe it, I just saw the video.”
I figured that was probably the video that the OP was referencing since the subject was spot on. I haven’t seen any others on that subject.
TCCN rambling about oil pumps and recommended viscosities aside, the OP shouldn’t put faith in a video that never states that a higher viscosity can’t be used and offers no hard evidence. Also, as you pointed out, his logic is flawed.
As usual, TCCN ended his short with, “That’s all I’m going to say” without ever showing any real proof of anything he mentions. I imagine he did get his views and likes though. Unfortunately, I contributed to them by watching.
You make some really good points.... actually it wasnt the original video it was some other video.. but i found this one after your comment...and ive watched his videos, he does some good reviews on cars. .but ya, why is "thats all Im going to say about that"? Thats a great question.. is there is more to say? But hes not saying it? LOL ...One other thing about all this is, aside from this particular video, It seems very cumbersome (and expensive) for Mazda or ANy other car company for that matter to go through the trouble of actually "programming" cars differently for different destinations. On top of that, and although claim no expertise in this area, it seems strange to be able to "program" an oil pump to work with a certain viscocity. This is why i started inquiring about this in the first place..I agree with you. That’s why I edited my first post on this subject to say, “I’m not saying I believe it, I just saw the video.”
I figured that was probably the video that the OP was referencing since the subject was spot on. I haven’t seen any others on that subject.
TCCN rambling about oil pumps and recommended viscosities aside, the OP shouldn’t put faith in a video that never states that a higher viscosity can’t be used and offers no hard evidence. Also, as you pointed out, his logic is flawed.
As usual, TCCN ended his short with, “That’s all I’m going to say” without ever showing any real proof of anything he mentions. I imagine he did get his views and likes though. Unfortunately, I contributed to them by watching.
Why are we going over this again? Complete nonsense.So I was going to continue a thread I had already started, but decided this is probably a new subject. i finally got comfortable with the decision to put 5w30 in my 2025 Skyactive NON-turbo engine INSTEAD of the recommended 0w20 , due to the fact I came to the conclusion it was only because of CAFE standards. And if they are recommending 5w30 in OTHER countries with the same climate, it stood to reason 5w30 is a good choice. A lot of you weighed in on this, and gave some great info!
HOWEVER,
I have stumbled across some interesting information since those posts, that has me thinking a bit differently.
Basically the information i found says that Mazda programs the ECM/ECU in the computer of the car DIFFERENTLY for different destinations. In other words, the car going to US isnt programmed the same as going to another country with different less strict CAFE standards, etc. Hence the different viscocity recommendations.
And YES, it still satisfies the CAFE.. BUT....
Some were saying that by using 5w30 instead of 0w20 in USA bound cars (that are programmed like this above ) it will in fact, put more drag on the engine , hence more wear BECAUSE of this programming that is done before they are shipped out.
IF this is true, that would tell me that owners manual is in fact correct and that 0w20 is IN FACT, a better oil for this engine than 5w30. Im not saying it makes 5w30 bad. Im just saying it would tell me 0w20 is BETTER for U.S bound skyactive non-turbo engines.
Im actually HOPING this information is NOT true. And i want to be wrong here.
Thoughts?
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You could control to viscosity if you wished. But viscosity changes vs temperature - so you would need to continually adjusting your control based on the viscosity changes with temperature. You could control to temperature - but then you would need to know your viscosity curve. It makes no sense.
You don't need an expert. The first Toyota to use 0W-16 was the dynamic Force series - which Toyota-Club did a deep dive in - with all the data from Toyota directly. The dynamic force controls to pressure, based on engine load and some other engine parameters like is it at operating temperature (the engine not the oil). This intuitively makes sense from an engine perspective, and its the only thing that makes sense from a control perspective. All this is published if you care to look.
I have no idea what Mazda does. But I know what Toyota does, and CCN is wrong. Its published for anyone that chooses to read - the control variables, how its controlled, how the pump works. https://toyota-club.net/files/faq/18-03-20_faq_df_r4_eng.htm