Planning on doing a few maintenance items for my car. I got a few parts already:

Oil - M1 0w40 or GC 5w30, have both leaning towards CG
Oil filter - Purolator
Fuel injector cleaner - Techron
Cabin Filter - Waiting for the activated carbon one
Seafoam - still debating, sitting in shelf
Rear diff fluid - suggestions?

What I need help on is which coolant and ATF I ask for when I hit up the Nissan dealer.

And also is this the correct NGK spark plug for a 2003? TIA

Iridium IX LFR5AIX-11 4469

 

Here are the plug choices: https://g35driver.com/forums/engine/...ep-colder.html

How many miles? For trans Nissan says Nissan Matic J only. Someone on here posted that Nissan has stopped making Matic J and they have a replacement for it, but I am not sure what it is.

As for coolant, if it is still green, you are not having over heating issues and you are not past 100k; I would leave it alone (maybe add some water wetter).

I would look at changing the rear diff fluid (supposed to be done every 30k), if it hasn't been done before.

 

Are you planning on doing any of these yourself? I need to do a similar maintenance on my 03 sedan as well.

By the way, what is seafoam?

 

google is your friend.













SEA FOAM MOTOR TREATMENT for Gas Engine Applications

100% Pure Petroleum
Use in All Engines in All Seasons
2 Cycle, 4 Cycle, and Diesels
Treats 3 Critical Areas: Gas Tank, Fuel Systems, and Crankcase

* Cleans fuel injectors
* Cleans carburetor jets
* Cleans carbon
* Stabilizes fuels
* Upper cylinder lube
* Removes moisture in fuel
* De-icer
* Frees sticky lifters
* Frees sticky rings
* Removes moisture in oil
* Cleans P.C.V. systems
* Cleans catalytic converter odors
* Oxygen sensor safe



How Many Mechanics Use SEA FOAM
In Tune-Up of 4 Cycle Gasoline Carbureted or Fuel Injected Engines
Autos, Trucks, and Tractors

1. With engine warm, slowly pour 1/3 to 1/2 pint through carburetor or throttle body throat. (If vehicle is port injected slowly pour SEA FOAM through direct manifold vacuum line that will feed all cylinders, possible sources are P.C.V. valve or brake booster line.) This will pull SEA FOAM down on top of the pistons and to the back of the intake valves to dissolve carbon. Turn ignition off. Restart engine after 5 minutes. If severe carbon build up is apparent, use more Sea Foam as previously directed. Make sure exhaust is well ventilated when using Sea Foam in these various ways as fumes will be extreme for a short time.
2. Pour 1/3 to 1/2 pint into oil crank case to clean rings, lifters, dirty parts and remove moisture.
3. Pour 1/3 to 1 full pint into fuel tank to clean injectors, carburetor jets, fuel lines and remove moisture.
4. Immediate Results: Smoother idle, increased R.P.M.'s better throttle response and improved performance. See label on can for detailed results for use in each area.

FUEL TANK, CARBURETOR, INJECTION and OIL CRANKCASE.
For Peak Performance, Use SEA FOAM Every 2,000 to 5,000 Miles

* A 100% pure petroleum product for use in all gasoline and diesel type engines, both 2 and 4 cycle. OXYGEN SENSOR SAFE.
* Cleans dirty engine parts internally by removing harmful gums, varnish and carbon. WORKS AND PERFORMS INSTANTLY.
* Removes moisture from oil crankcases and fuel tanks.
* Stabilizes and conditions fuels. Use for engine storage.
* Cure hesitations, stalls, pings and rough idle due to carbon buildup.
* Helps pass emissions test. EPA Registered.

When Used Thru Injection or Carburetor

* Cleans carbon build up
* Cleans intake valves and pistons
* Gives smoother idle
* Cleans catalytic converter odors
* Cures hesitations and pings
* Restores power and pickup
* With warm engine running, SLOWLY pour 1/2 pint through carburator, throttle body or direct manifold vacuum line that will feed ALL CYLINDERS. Possible sources are P.C.V. valve or brake booster line. Turn ignition off. Restart engine after 5 minutes. Be sure exhaust is well ventilated. Fumes will be extreme for a short period of time.
* For use in injector cleaning machines, use 50% SEA FOAM and 50% fuel.
* Fill diesel filters with SEA FOAM to clean injectors fast.

When Added to Crankcase (Oil)

1. Frees sticky lifters and rings
2. Increases R.P.M.'s vacuum and compression
3. Cleans dirty parts
4. Removes moisture
5. Cleans PCV valve systems

One pint treats 10 quarts of oil (avg. 1 1/2 ounce per quart).

When Added to Fuel Tank

* Cleans fuel injectors and carburetor jets
* Cleans carbon as you drive
* Lubricates upper cylinders
* De-ices and removes moisture
* Diesel full conditioner and anti gel
* Stabilizes fuel

One pint treats 8-25 gallons of fuel (average 1 ounce per gallon).

In Injector Cleaning Machines

Add a 50/50 blend of fuel and SEA FOAM into injector cleaning machine. Run directly through the fuel rails to clean injectors fast. Add SEA FOAM to your fuel tank to clean injectors as you drive.

 

Regular - LFR5AIX-11 that is the listed part for the NA, I'm getting different answers

I'm going to do the rear diff fluid, didn't know it needed changing ever 30k.

Car is over 100k, any idea if the coolant is just regular green ones or Nissan/Infiniti specific?

Thanks for the help

Yes, the DIY videos help out a lot.

 

Redline 75W90 for the diff. Lots of people like AMSOil Severe Gear 75W90 also

 

I use redline in my rear diff. Works like a charm. Good info on that seafoam treatment. I always thought that thing messes up your motor or something.

 

GC is 0w-30 btw

 

Tangerine... just wondering why you would use both Seafoam and Techron, or are you debating between the 2?

This is one where you shouldn't deviate from the manufacturer's recommendation. Use their coolant and ATF fluid ONLY (approx $35 per gallon), Nissan is very specific about this. Should you use anything else, it could easily void your warranty should something happen to your cooling system or tranny and thereby your engine.

 

For fuel injector cleaner I use BK44

You should use OEM coolant because it is designed to be safe with the cooling system
http://www.thenismoshop.com/ikorb.ph...roduct_id=1532

Here's a link for the best deal on spark plugs I've found
https://g35driver.com/forums/engine-...your-door.html

 

Yep, I was debating. I ended up using seafoam since I can use the Techron later. I ended up going to the Nissan dealer to pick up some fluids.

$10.82 quart Matic S
$24.99 gallon coolant

I feel so jibbed after oyoquem's link =( dang Clay Nissan.

 

do you know if you can mix the two.