Oil Change 3k, 5k, or 7.5k?

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jandree22

Member

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2007 Mazda5

• Jan 23, 2007

• #1

Oil Change 3k, 5k, or 7.5k?

How often do you guys change your oil 3,000mi, 5,000mi, or 7,500mi? The Owners Manual Schedule has you choose between 5k and 7.5k intervals, but common practice is usually 3k.

 

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njaremka

Wiggity-Wack-O-Tack

Contributor

:

2012 Mini R55

• Jan 23, 2007

• #2

the oil companies are the only ones that benefit from a 3000 mile oil change. you should be fine with 5000 basedon modern engine manufacture tolerances and modern oil technologies. with full synthetic, you can be good up to 10,000 miles. i believe the new corvette has 15,000 mile oil change intervals. (on mobil 1)

 

Z

zoomzoom mazda5

Member

Contributor

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mazda5 2006, Focus ST

• Jan 23, 2007

• #3

Change my oil every 3500 miles

 

T

the_saint

50% borikn

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OG Mazda5

• Jan 23, 2007

• #4

I go every 5k miles, and I run semi-synth.

 

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paging_drburgos

Member

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2017 Mazda CX5 GT - Premium

• Jan 23, 2007

• #5

im around 4,500

 

A

Andrewsmc

Member

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Sunlight Silver Msp

• Jan 23, 2007

• #6

I change mine just cuz im OCD about the damn car every 2500 and keep the reciept(for when we sell it) (if we do)

 

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B1GHAM

Member

:

03.5 Mazdaspeed Protege Laser Blue Mica #2729

• Jan 23, 2007

• #7

I change mine between 3-5k miles... USUALLY 3k but I have let it go until 5k. I know I dont HAVE to change my oil that frequently (3k), but I also drive my car harder than "normal driving" so I figure its preventative maintenance... esp. on a turbocharged vehicle.

 

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bulwnkl

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'15 6, '06 5

• Jan 23, 2007

• #8

I approach this differently than most. I analyze the oil and see how far I can go. 5,000 miles has been OK so far, but then we take quite a few extended highway trips. If you really want to know, sample the oil and see.

 

J

jandree22

Member

:

2007 Mazda5

• Jan 24, 2007

• #9

I’m thinking of opting for the 5k as specified in the OM, but I was sort of caught off guard when the Service Advisor suggested it after 3.5k miles while it was in for unrelated service. I decided to get it changed to at least get the new-car-oil-nasties out of there, plus I had a free oil change coupon from when I bought the car

I plan to get another change at 6.5k, then 10k, then 5k intervals from that point on.

 

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olddaddy

Member

• Jan 24, 2007

• #10

The way I read the Maintenance Heavy Duty Driving schedule (which applies to most) oil and filter changes should be done every 5k or every 4 months.

 

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Wytchdctr

Member

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2003 Hyundai Elantra

• Jan 24, 2007

• #11

5k

 

2

2cam16

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'06 5, '04 WRB WRX

• Jan 24, 2007

• #12

3k or 3 months, whichever I can afford for both cars.

 

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dommo_g

Member

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2004 SRT-4, 2007 MS3

• Jan 24, 2007

• #13

Manual says 5k, I go with 5k. My SRT I change every three. Mazda gets 5w-20 Mobil1, and the Dodge gets 5w-30 Royal Purple.

Oil is cheaper than metal.

 

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Partsguy

Member

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Mazda 5

• Feb 2, 2007

• #14

I go 8,ooo K with Mobile1. I keep all the receipts to prove I changed the oil according to the manual. I've had the car for 10 months and just crossed 22,000 Km's.

Go full synthetic or dino-oil. The synthetic blend really makes no difference.

 

R

Rocket

Member

• Feb 2, 2007

• #15

I have 30,000 miles in 13 months. I use the 5,000 mile schedule.

 

M

mountjonas

Member

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2013 VRM MS3

• Feb 2, 2007

• #16

5k.

 

M

MD5

Member

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06 Carbon Gray Touring 5

• Feb 2, 2007

• #17

I was changing it at 4k using Mobil1, but this last change 2 days ago, the oil didn't really look that bad.

I think I'll change it at 5k the next time and see how it looks and go from there.

Matt

 

C

chuyler1

goes to eleven

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2013 CX-9

• Feb 2, 2007

• #18

4K +/- 500mi.

 

I

irloyal

Member

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Explorer, 'Vette, Mazda5, Quest

• Feb 13, 2007

• #19

Partsguy said:

I...snip...
Go full synthetic or dino-oil. The synthetic blend really makes no difference.

Click to expand...

Actually it is the additive package that makes the difference in Dino's. And a semi-synth typically has a better additive package for high mileage engines.

FWIW, I recommend running mobile 1 5K formula and testing your oil. Do the 5000 test first and establish a base line, then stretch the oil change by 2000 mile intervals until you see changes in the oil results. When you start to see carbons go up, or reductions in esters or oxygenation you are going to far.

Here is a great resource:
http://www.bobistheoilguy.com/

 

0

07MZ5SA

Member

:

2007 Mazda 5

• Feb 14, 2007

• #20

@ 3.75K w/ OEM filter and Exxon 5W-20.

@ 7.5K will go either OEM or PureOne and Mobil 1 0W-20 or 5W-20.

I get the benefit of synthetic protection and maximum (factory allowable) OCI.

Besides, removing lower engine shield is a pain.