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Old 11-01-2014, 07:45 PM
 
959 posts, read 1,018,153 times
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i just got a brand new 2015 mazda. i'm use to doing my first oil change at 1k miles then every 3-4k after that. the dealer guy said once every 5-7k (with the first oil change being at 5k) with full synthetic is good enough.

is he right? are modern day engines that advanced and good now?
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Old 11-01-2014, 07:48 PM
 
Location: Orlando
148 posts, read 339,191 times
Reputation: 154
Whats does your owners manual say?
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Old 11-01-2014, 07:52 PM
 
Location: North Beach, MD on the Chesapeake
32,173 posts, read 39,297,084 times
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Quote:
Originally Posted by Niall-Florida View Post
Whats does your owners manual say?

Probably what the dealer told him.
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Old 11-01-2014, 07:57 PM
 
Location: Orlando
148 posts, read 339,191 times
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I don't think the dealer has a reason to lie about the service intervals. But if I had any doubt, just simply check the manual. I know there's a detailed schedule, usually up to 12 years/120,000 miles.

Last edited by Niall-Florida; 11-01-2014 at 08:10 PM..
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Old 11-01-2014, 08:00 PM
 
Location: Ft. Myers
15,722 posts, read 9,718,511 times
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I'm very old school, I do just what the OP said, I change the first oil at maybe 1,000 miles and 3,000 after that. My logic is, there is a lot of metal shavings rolling around in the motor from when it was built and the sooner you can get those out the better. Might be no so true today, but oil is the cheapest thing you will ever put into a motor.

Don
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Old 11-01-2014, 08:09 PM
 
Location: Florida
484 posts, read 827,953 times
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I agree with the dealer.
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Old 11-01-2014, 08:22 PM
 
Location: Montgomery County, PA
13,721 posts, read 8,706,304 times
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Stick with the manufacturer recommendation during the warranty period. I would not even risk doing it myself. I don't want to give any excuses to anybody to deny coverage.
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Old 11-01-2014, 08:22 PM
 
Location: Vallejo
13,469 posts, read 15,084,793 times
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Whatever your manual says.
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Old 11-01-2014, 08:23 PM
 
Location: Texas
5,586 posts, read 11,889,407 times
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You'll want to change the first time at about 1000 miles. The reason is two fold. You'll want to get the break in materials out of the system and any left over debris from the manufacture out of it too. You'll want to change it early because the engine when new has to "plate up" with the additives that are in the oil. When an engine is new, it goes thru the additive package pretty quick. After that, you can use any quality branded oil that has the Ford spec on the bottle and change at an easy 5000 miles or go to 7500 miles{synthetic not required}. There's no need to change any earlier, like at 3000 miles. The issue is the modern engines with lean burn technologies do not make the contaminates of the older engines. We also seal our engines a lot better. It's rare to find one dripping oil all over the driveway anymore. That means dirt stays out. We also have much cleaner burning gasoline that just doesn't make the contaminants either. In your owners manual you'll find 2 maintenance schedules for various driving conditions. The severe service will likely recommend the above OCI.
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Old 11-01-2014, 08:29 PM
 
1,735 posts, read 4,141,770 times
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I'd follow whatever the factory recommends. Changing the oil at 1k miles is a waste of time and money.
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