For those that have had their H3's a while is there any mod that you wish you would have done in order to extend/prolong the life of something in order to prevent a potential headache down the road? radiators? fans? transmission coolers? etc

 

I'm absolutely rabid about doing preventative maintenance. I do wish though that I would not have painted OEM center caps.

 

i "waste" a lot on fluids, early oil changes. did tranny and diffs,t case early.
also spray oil in door bottom drain holes, rust starts INSIDE,never stops.
sun roof? rub rubber and metal with silicone grease.
id like to hear about coolant flush,change,flush brake fluid, ps fluid?
treat it good, im pretty much trouble free at 72000 on my 2010

 

Each season I check the undercarriage for rust and give it some attention. I also replace parts early. Belt, hoses, brakes, tensioner, idle pulley, light bulbs, air filter, oil & filter, battery, battery connectors, tires, antifreeze, radiator, t stat, temp sensor, cam actuator, 4x4 actuator.... etc.... Like I said rabid.
I've done a ton more. Both mine and my lady friends 06 H3.
I mean allot.... Lol!

 

But alas we use them for business so that have to run.

 

I am not in the habit of replacing or fixing stuff that ain't broke.

Changing fluids per the maintenance schedule is about it.

 

Still considering an oil catch can to keep the throttle body clean and the idle smooth.

 

Always pour CLEAN SHOWER in the sunroof tray at every oil change to keep the drains flowing.

 

We follow a severe duty maintenance program since we go OffRoad quite often.
Engine Oil every 5K (Mobil1 synthetic)
Tcase fluid every 20K (Dex VI Synthetic)
Trans fluid 50K (drop pan, new filter not a flush)
Diffs every 20K or less depending on water crossings, etc. (75/90 Mobil1 Synthetic, Inspect pinion and ring)
Coolant every 50K (Orange stuff)

It may be a waste of time and $ according to some but that's how we do it. Especially the Tcase fluid. If you wheel look at the color of the stuff you have in there now!!! Reddish Brown is not the color it should be. Cherry red is the original color of the Dex VI.

 

Yeah parts and fluids are low in cost ratio to being down for a business day. A loss of hundreds. So, chit gets changed often. She runs a house/pets sitting. I am head of operations of lawn, hard scape, snow business.
I'm out daily in stop and go bumper to bumper 80-100 degree heat or freezing but tastic cold for hours.
It's a hard life for Happy Hummer. H3 takes the brunt lol.