I have a new 2025 vehicle and wanted to do a first oil change at around 1000 miles to remove any initial contaminants and hopefully prolong the life of my engine. I saw a post that said these engines need 5k-8k to be run-in. I have read that full synthetic shouldn't be used until an engine has been broken/run-in. Using this logic should I then use a blended motor oil until my next oil change (5k) at which time switch to a full synthetic? Needless to say I will change the oil filter at ALL oil changes. It has been a long time since I have had a new car and I am sure engine/manufacturing technologies have changed a lot. I just want to do right by my engine. THANKS for any and all input given..

 

It’s not going to really be noticeable if you use a *blend or full synthetic. Just changing the oil at around 1000 to 3000 has shown by way of oil analysis a good practice. Not sure where u found the break in period but Skyactiv engines take longer to break in to gain the highest power claimed. Both automatic transmission and engine you would see a distinct power change at about 15k plus miles.
I recommend to use an oil service at between 5-7 mile intervals . In some cases you could go to 10k but it’s your vehicle. If you are DIY oil and filter I suggest the first recommendation.

* There are many places that Mazdas are sold that only have a blend available.

 

I always wonder if those claims by the oil manufacturers are completely true & safe. I only go every 5k on CX-5 turbo, and 7.5k on the non-turbo myself. It's frightening to go 10k miles for me at least lol.

 

The best thing is at the next 5000 miles do an oil and filter service and have the analysis of the oil . Then you will know for sure the best intervals at you usual driving area..

 

For almost 50 years I've changed the oil in all my cars. That's a lot of changes considering that most of those were at 3K intervals with dino-oil. Just having purchased not one, but two '22 CX-5s that were certified, my oil changing days may have come to an end. Why? Warranty. I'm not 100% sure on this, but in order to keep the certified pre-owned warranty intact (additional 1 year/12K bumper to bumper and 7/100K powertrain), that maintenance must be performed by an ASE technician and records kept. Again, I'm not sure on that, but it certainly makes sense from a dealer/Mazda perspective.

 

The only work that needs to be done by a MAZDA dealership is WARRTY (not all) and Safety Recalls. I am a Certified and current ASE Master Technician L1 & L2 and have done several warranty services authorized by MAZDA. As well occasionally I get called to go to my local MAZDA dealership to do the same.
Aside from that if you keep accurate record and, invoices of oil and filter purchases as well tire and other basic maintenance record your WARRATY is in tacked.
As for still using non synthetic or DINO oil, it really does not make sense anymore, the availability of both semi and fully synthetic are readily available in most countries and at reasonable cost. However, if you are in a 3rd world country and all you get for your NEW Mazda is DINO oil your covered! The misconception many have is they think they "must" only use a specific oil. But unless the information about what oil to use has the exact wording "REQUIRED" then all you need to use is the SAE and other specification that meet the OE standard for motor oil.

Read this to understand it even better.

Magnuson–Moss Warranty Act - Wikipedia

Most Mazda from at least 2017 to present is easier now to change the oil (even for DIY) and filter then IMHO ever before. Its clean and easy .

 

Callisto- what is your opinion of topside oil extraction for oil changes. In my BMW, I use an extractor as the oil filter is a cartridge type and resides under the hood for easy replacement. I use an extractor as I don't have to worry about getting under the car and there is no possibility of messing up the drain bolt.

 

I suppose if the oil intervals are no more than 5k-7 miles for a DIY it is a less semi mess way to change the oil? But for others that have a vehcle with the plastic under cover and an oil and filter access a pair of ramps it at least for me does not make sense to pull using an extractor? The big reason not to use extractor method is you cannot get the lower oil pan drained with all its accumulated debris and contaminates. Oil analysis shows this to be true comparing service followed oil change vs extractor method. Also, I would not advertise doing it that way because it could from a technical standpoint may void the drivetrain warranty coverage. Unfortunately, the Moss act does not cover if a DIY or service shop uses other than a factory recommends service procedure. Aside from a couple of Diesel engine manufacture I am not aware of any auto manufactures gasoline run engines that factory service procedure shows an extractor for oil and filter service. Oh, and also there is an exception for motor homes but that is another altogether topic of who covers what on a new motor home.
I have the engine top mount cartridge oil filter as 2 of my BMW's. But no matter how careful and prepared I also spill old oil on the engine. So now I am rag ready when I change them. On one of the 2 I engineered a complete cartridge to spin on adapter but because the spin on adapter is inverted oil still gets on the block and needs to be wiped. I can't win on those engines.

 

OW-20 GF5 W/MOLY OE MAZDA FULL SYN -
no issues at 30k , dosent burn oil , great mileage - USE ROKI OE Japsn made oil filter if you can find it - - I buy em 10 pax w/ drain plug washers - motor on !

 

Thanks for this.