12 month service

[xavw]

I have a question?
i went to the dealer for a 12 month Scheduled Service , they told me i need a Internal engine cleaning, combustion chamber cleaning and injection cleaning.
all the cleaning things cost 110 $ can.
what they realy do ,por some stuff in the gas thank and in the oil?
is it realy good to do that or the dealer just want to do some more $$ ?
also, how often the AT fluid should be change?
thank for your advise.
xav
my car is a mazda 5 2010 AT. 20000 KM

 

[X-Tanker]

They just want your money. If it's not in the maintenance schedule in the owner's manual, you don't need it.

ATF should be changed around every 30k. I had mine done at 34k and it was already brown.

 

[sralf4]

xavw is right, they are trying to rip you off. I would find another dealer if I were you.

 

[Robotazky]

My response would be: "so the injectors are garbage, the oil Mazda uses is garbage, and the rings are already so shot that crud is blowing into the combustion chamber? Thanks for letting me know the car is a POS so that I can sell it and never by another Mazda!"

Stay as far away from that dealer as you can. Lying sacks of s*@$.

 

[skyhawk]

I had my dealer follow the suggested maintenance schedule in the owner's manual.
It never included injector flushing or cleaning. The warranty is over now
and the mazda5 is still doing great. I did agree to their occasional suggestion
to add a bottle of injector cleaner into the tank - every 2 or 3 oil changes.
I have no idea if it made a difference.

Another thing to consider is a mechanic (I hope its not a rookie, and
I hope its not another shop that the dealer contracts) will be working
on the engine.. maybe inject the cleaner in the fuel rails somewhere, run the engine
hard to flush the system.. etc. etc. This in itself is like tampering an engine
that's built in Japan. The principle of 'if it works don't touch it' I think applies
to the fuel injection system of the mazda5.

 

[Davicho]

I've never done an "injector cleaner" procedure to any of my vehicles. I honestly think is a crock of placebo effect stew. The way I see it, if I use gasoline to remove gunk and oil residue from other vehicle parts, why would I need to run. "cleaner" through something that constantly flows fuel through it. If an injector fails its either two things: 1. Electrical issue or 2. Particle obstruction. Which neither will be fixed by the "injector cleaner" offerings. Just my $0.02

 

[Robotazky]

I had my dealer follow the suggested maintenance schedule in the owner's manual.
It never included injector flushing or cleaning. The warranty is over now
and the mazda5 is still doing great. I did agree to their occasional suggestion
to add a bottle of injector cleaner into the tank - every 2 or 3 oil changes.
I have no idea if it made a difference.

Another thing to consider is a mechanic (I hope its not a rookie, and
I hope its not another shop that the dealer contracts) will be working
on the engine.. maybe inject the cleaner in the fuel rails somewhere, run the engine
hard to flush the system.. etc. etc. This in itself is like tampering an engine
that's built in Japan. The principle of 'if it works don't touch it' I think applies
to the fuel injection system of the mazda5.

If you use "Tier 1" gasoline, dealer injector services are a complete waste of money. I use a bottle of Techron every 10,000 miles or so, but I also use Shell gas, not cheap gas with no detergents. Use good, quality brand-name gas and you shouldn't have to worry about it. I just run a bottle through at 10K to be sure.

 

[Silentnoise713]

I've never done an "injector cleaner" procedure to any of my vehicles. I honestly think is a crock of placebo effect stew. The way I see it, if I use gasoline to remove gunk and oil residue from other vehicle parts, why would I need to run. "cleaner" through something that constantly flows fuel through it. If an injector fails its either two things: 1. Electrical issue or 2. Particle obstruction. Which neither will be fixed by the "injector cleaner" offerings. Just my $0.02

Same here. I drive my cars to over 100K and have never needed an injector cleaning. However, I can see the potential need if you drive the car very infrequently or parked for years and give the opportunity for things to build up. IMO, the worst thing that can happen to a car is not drive it.

EDIT, you should not have to clean the fuel injectors before having to replace the fuel filter.

 

[Robotazky]

Same here. I drive my cars to over 100K and have never needed an injector cleaning. However, I can see the potential need if you drive the car very infrequently or parked for years and give the opportunity for things to build up. IMO, the worst thing that can happen to a car is not drive it.

EDIT, you should not have to clean the fuel injectors before having to replace the fuel filter.

Don't these cars have the "lifetime" fuel filter, aka the fuel pumps that are so sh**** that the fuel filter outlasts them?

...like Ford?