The big 300,000 (Any other high mileage 1st-Gen 6's?) - Mazda 6 Forums : Mazda 6 Forum / Mazda Atenza Forum
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post #1 of 47 (permalink) Old 01-14-2015, 09:57 PM Thread Starter
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The big 300,000 (Any other high mileage 1st-Gen 6's?)

I posted this in the v6 forum's "How many miles on your v6" thread, but I'm interested to know if there are any other high mileage 1st-Gen 6's with the original engine. Post your mileage if you have 200,000+ and which engine you have.





One other person hit 315,000 miles in that thread before their v6 engine died on them and I thought I saw a post from someone that was going to hit 300,000 before me but I haven't seen them post back here since.


Scott

2004 Mazda 6s GT MTX sports package

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post #2 of 47 (permalink) Old 01-14-2015, 11:02 PM
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I can imagine you have replaced many plugs, gaskets and seals along the way. I'm at 180k on my 04 6s with 5 speed manual and I've replaced plugs 4 times, just changed 4 of original ign coils(other 2 replaced 90k ago), valve cover gaskets, upstream O2 sensors, upper int gaskets, and all fluids many times...everything else I think is original on this motor. Owned since [email protected] 60k miles.

[B][SIZE=2]2004 6s MTX/sport clutch/air box mod/de badged/ TB Coolant by-pass /6000K HID/AWR 88D Rear mount/AWR 88D upper trans mount/exh mod


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post #3 of 47 (permalink) Old 01-17-2015, 02:35 PM Thread Starter
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I've pushed spark plug replacements so I'm actually only on my 3rd set which will probably last the rest of the car's life. The second set were the Bosch Platinum+4 and did great. Current set are the Bosch Platinum IrFusion (also a +4 design).


Still on the original coils as no signs of missing. My wife has a 2005 Ford Thunderbird and she's had 4 replaced so far under warranty. Ford extended the coverage to 100,000 miles as they were apparently having issues with them. When one was starting to fail and you got an occasional miss, it was obvious even with the V8 so just can't bring myself to spend the money if they are working fine.


I should replace the valve cover gaskets as there was a very very slight amount of oil in a couple of spark plug wells when I replaced the spark plugs. I also occasionally smell some oil on the exhaust but it's not showing up on my garage floor yet.


Here's my list of repairs on the drive train.

  • Starter - ~95,000 (covered under extended warranty)
  • Spark plugs - 124,352
  • Clutch - 134,897
  • Water pump - 162,486
  • Rear engine mount (dogbone) and sway bar links - 170,520
  • Intake accordion hose - 196,508
  • Rear pre-cat (P0421) - 220,060
  • Passenger side transmission seal - 222,168
  • Spark plugs and intake plenum gaskets - 259,832
  • Front pre-cat (P0420) - 275,378
  • Driver's side wheel bearing and endlinks - 298,177
I can't find the receipts for them but I know I replaced the driver's side and passenger's side CV boots as well. Otherwise, oil changes (10,000 OCI with Mobile1 EP), air filters and PCV valves.


I've been reasonably happy with the car. I think I actually had fewer repairs on my 1987 626GT which had 350,000 miles on it when we stopped driving it. Engine was still running well but the interior was getting pretty worn and the clear-coat was peeling. I replaced it with my 6s.

I'd love to have it last for another 2 years but who knows once you get to this mileage.

Scott

2004 Mazda 6s GT MTX sports package

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post #4 of 47 (permalink) Old 01-17-2015, 03:58 PM
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If my car lasts half that many miles I'd be so excited haha. My 04 6s is currently sitting pretty just under 60k miles
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post #5 of 47 (permalink) Old 01-17-2015, 06:50 PM Thread Starter
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If my car lasts half that many miles I'd be so excited haha. My 04 6s is currently sitting pretty just under 60k miles

Wow, how do you drive so few miles?


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post #6 of 47 (permalink) Old 01-17-2015, 06:53 PM
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Wow, how do you drive so few miles?


Scott
My dad bought the car to commute back and fourth to Ottawa right before being promoted to business server management (can work from anywhere including our basement) so the car wasn't used for daily commuting and thus had very few kilometers when he gave it to me a little while ago. Now it's used for commuting to and from university 5 times a week but other than that is never driven since I'm constantly bogged down with labs ect so I never have time to drive it for fun so essentially it only gets 10k kms per year on it even now.
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post #7 of 47 (permalink) Old 01-17-2015, 07:21 PM
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Scott, which manifolds did you use to replace yours?

2004 Mazda 6 V6/MTX, Steel Gray
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post #8 of 47 (permalink) Old 01-18-2015, 10:45 AM Thread Starter
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Scott, which manifolds did you use to replace yours?

The first one (rear) I went with Mazda's. The second one (front) I went with an aftermarket done by a local muffler shop (AP Exhaust part) given the mileage on the car.


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post #9 of 47 (permalink) Old 01-21-2015, 08:46 PM Thread Starter
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Originally Posted by e4w View Post
I can imagine you have replaced many plugs, gaskets and seals along the way. I'm at 180k on my 04 6s with 5 speed manual and I've replaced plugs 4 times, just changed 4 of original ign coils(other 2 replaced 90k ago), valve cover gaskets, upstream O2 sensors, upper int gaskets, and all fluids many times...everything else I think is original on this motor. Owned since [email protected] 60k miles.

So e4w, looks like it's just you and me.


You must have a pretty good commute as well with 120K in 7-8 years.


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post #10 of 47 (permalink) Old 01-22-2015, 11:39 PM
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Quote:
Originally Posted by HerronScott View Post
So e4w, looks like it's just you and me.


You must have a pretty good commute as well with 120K in 7-8 years.


Scott
I actually have a short commute; 45 miles total daily, but my wife and I are always out and about on the weekends+ we did a couple trips from GA to LA.

[B][SIZE=2]2004 6s MTX/sport clutch/air box mod/de badged/ TB Coolant by-pass /6000K HID/AWR 88D Rear mount/AWR 88D upper trans mount/exh mod


my 6

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