Thanks a bunch for tolerating my differential issues. It grinds a bit still, but not nearly as bad and for far less time than before. I'm back for a little more advice. To recap, '06 commander 5.7 limited QDII yadayada...111K miles, and since my wife can't seem to stop finding her way into traffic court or insurance claims with it, I've given her my Infiniti and now the Commander is my DD. So far, for routine maintenance/freshen up, I've swapped all fluids (diffs, TC, trans/filters) that I know of, but a couple of questions remain:
Coolant - It was in a minor fender bender in March, and the radiator was replaced as part of the repairs. I am fairly certain they did not use the correct antifreeze, as it is yellow-green and the truck runs hotter than usual (no overheating yet). I know I need to fill with the correct fluid, but since it is a new radiator, do I need to flush it or can I just drain via the plumbcock and refill with the correct 50/50 of the Chrysler spec antifreeze/distilled water?
Sensors - At 111K miles, I am becoming increasingly aware of just how many sensors these modern cars have. I'd love to have a list of replaceable/meaningful sensors that would require replacement (and you could DIY). Should such a list surface, I'd be happy to write-up/film how-to threads.
At this time, my planned mods are an OME HD kit, new UCAs, and exhaust (although the plasti-dip threads have me thinking my chromes pieces would look pretty bitchin in matte black). Are there any preventative/"while it's apart" things I should take care of to prepare?
Do a complete flush of the coolant, and use the correct HOAT coolant instead (orange type). Best to flush out all the old coolant first, fill it up w/ just water (can also use flush fluid as well, though not always advisable), run the engine w/ the heater blasting for like 10mins. Let it cool and drop the coolant/water again. This time, refill w/ HOAT coolant and distilled water combination.
As far as fluid is concerned, don't forget to flush the brake fluid; this is overlooked so often. The fluid in the master cylinder should be nearly clear; $20 says it's pretty dark by now...aka contaminated fluid. Recommended every 2yrs. Real easy job to do... but if it's also low on fluid, it's also a sign your brake pads are wearing down too. Check both f/r axles and examine if you need those replaced. When I did my brake job, I ended up replacing both front/rear rotors (started to shake often), along w/ the pads.
Other items to do on the HEMI:
- Replace 16 spark plugs (2 per cylinder slot) w/ stock Champion Copper plugs, gapped accordingly.
- Replace PCV valve, air filter, wipers, and possibly fuel filter.
- Replace oil/filter (pretty obvious, just wasn't listed; I usually run some motor flush between changes).
- As a routine, try to steam clean the engine bay every so often; I try to do it every 7500-12500 miles to keep most of the parts as clean as possible from dust, oil residue, etc.
- Examine serpentine belt, and replace accordingly; may also require replacing the tensioner as well.
I hope I didn't miss anything else at this point.