When did you do your first oil change?

[erhayes]

First oil & filter at ~ 2,600 miles, second at 6,000 and 3d at 12,000 (6,000 OCI) and will do a UOA at that time to decide on more or less miles between changes. I think the first change was overkill at 2,600 but, the dealer gave a free one at 3000 and I was going on a trip. Mazda says 7,500 for my type of driving profile but, I will do a UOA at 6,000 to see where I stand.

 

[Johann]

I just did my first oil change at 4989. I used Motorcraft 5-30 synthetic blend because that's probably what they used at the factory.
Can't believe people are changing the oil within the first 1000 miles. Who started the myth that break-in oil had to be removed as soon as possible? And what's this nonsense about metal shavings in the engine? Has there ever been a Mazda engine failure due to metal shavings?

 

[wannabe]

I just did my first oil change at 4989. I used Motorcraft 5-30 synthetic blend because that's probably what they used at the factory.
Can't believe people are changing the oil within the first 1000 miles. Who started the myth that break-in oil had to be removed as soon as possible? And what's this nonsense about metal shavings in the engine? Has there ever been a Mazda engine failure due to metal shavings?

+1 on the Motorcraft

i personally do mine around 4000.

 

[robbie2883]

Who started the myth that break-in oil had to be removed as soon as possible? And what's this nonsense about metal shavings in the engine? Has there ever been a Mazda engine failure due to metal shavings?

if you actually READ what i said you would see that i said most manufacturers actually do this initial change before the motor ever even gets put in the car. i just do it myself for peace of mind. do you actually understand the physics involved when a new motor is being broken in? seating the piston rings involves CUTTING the cylinder walls and rings together. this cutting leaving little metal powder and shavings behind. if you don't believe me about this initial oil change go ask any professional motor builder how they handle it when they put a new motor together. or even rebuild an old one with new bearings and rings and cylinder hone. honestly...10 bucks for peace of mind...i'm not so cheap i can't handle that.

 

[erhayes]

My CX7 has an oil filter to protect my engine against damaging shaving? and other bad stuff. Manufactures use assembly lubricants on various parts to assist the wear-in of parts. The assembly lubes get into the oil and continue to a lesser degree to protect my engine. I see absolutely no value in draining out this protection too early.

 

[robbie2883]

^^^ once again, you'd have to have a true understanding of how a motor works and what happens when a motor is ran in the infancy of it's life. opinions are not the same!