Fluid Flushing Requirements - Jeep Commander Forums: Jeep Commander Forum
Regular Service / Maintenance This section contains discussion about regular service and maintenance (upkeep) of your Jeep Commander

 
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post #1 of 4 (permalink) Old 10-17-2009, 03:33 PM Thread Starter
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Fluid Flushing Requirements

TSB (Technical Service Bulletin) #26-001-09

NUMBER: 26-001-09
GROUP: Miscellaneous
DATE: September 24, 2009

THIS BULLETIN SUPERSEDES TECHNICAL SERVICE BULLETIN 26-003-07, DATED
MARCH 30, 2007, WHICH SHOULD BE REMOVED FROM YOUR FILES. THIS IS A
COMPLETE REVISION AND NO ASTERISKS HAVE BEEN USED TO HIGHLIGHT
REVISIONS.

SUBJECT:
Fluid Flushing Requirements

MODELS:
2006 - 2010 (XK) Commander

DISCUSSION:

Chrysler Group vehicle fluid systems do
NOT require regular flushing. These systems
include: engine oil, transmission oil, axle lube, brake fluid, power steering fluid, and
refrigerant. The only exception to this requirement are published in the vehicle
maintenance schedules, e.g. engine coolant.

Exceptions to this recommendation include only those instances where a failure has
occurred and/or the system has become compromised, contaminated or overheated
beyond the normal operating range.

Chrysler Group does NOT recommend aftermarket chemicals to flush the engine,
transmission, brake or steering systems. Chemicals contained in these products can
damage the system elastomeric components, and contaminate the component fluid,
leading to loss of system/component durability and service life. When necessary,
only the original approved system fluid should be used to flush these components
using teamPSEŽ approved equipment.

If the engine coolant contains a considerable amount of sediment, clean and flush with
Mopar Cooling System Flush, p/n 04856977, or equivalent. Follow with a thorough rinsing
to remove all deposits and chemicals. Refill with a minimum of a 50% mixture of the
specified coolant and distilled water.


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post #2 of 4 (permalink) Old 10-17-2009, 04:33 PM
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I don't get it... I am guessing this means you don't use any of those machines for pumping and flushing out your trans oil and such, but, nothing lasts forever, so do you do a drain and fill on trans oil? Brake fluid won't last forever either. Don't you have to replace that as well?


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post #3 of 4 (permalink) Old 10-17-2009, 04:46 PM
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Maybe the Search Meister was posting this to counter the claims by such oil change shops as Jiffy Lube that are pushing engine and transmission flushes as part of regular maintentance. Often these type shops recommend the flushes to increase their income.

2007 Jeep Green Limited 4.7 Flex Fuel, RR 2.5" 4 inch Superlift coils on rear, 1.5" Spacers, Bridgestone 265/70/17, K&N CAI, Flowmaster, Diamond Plate Locking Trunk, Blue Ox Baseplate w/D-rings, "Get Lost 4X4" Front Bumper, T-Max 9000 winch, "Get Lost rear tire carrier, 30 gal second gas tank.
Second 2007 Jeep Green Limited Leather HEMI QDII VES Uconnect Flowmaster OEM Skids Tow Package

Maybe the two will meet up soon edit: they did , I now have 2,now gave 1 away...and got it back again.
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post #4 of 4 (permalink) Old 10-17-2009, 10:15 PM
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I have addressed how flushing of various components is unnecessary and often detrimental.
lekmdm, changing trans fluid by simply dropping the pan, changing filters, and restoring the fluid back to the correct level provides more than enouph restoration of detergents and anti shear agents.
Oftem times, flushing, will cause debris to be forced into the valve body, causing low apply pressures and ultimatly, hydralic clutch failures.
Flushing a crankcase, particularly on a maintained engine, is wasteful and potentally harmful as a solvent is being pumped through the oil passages.
Often, at startup, once oil has been installed, the remaining solvent cant clear the oil passages fast enouph, resulting in bearing damage.
As you can see, Chrysler says to only flush (if you must) with the correct fluids, not cleaning solvents.
Regarding brake fluid flushing.....Although there is no time/mileage interval specified, I flush brake fluid (with brake fluid) about every 2 to 3 years on my D D'S.
Brake fluid is hydroscopic. It can and does draw moisture right through the master cyl cap or other seals. Incredibly dry stuff.
But, in different parts of the country you could go far longer.
It depends on how humid an area you live/operate in.
Brake fluid is EZ to tell if flushing is due though.
It starts out almost clear (DOT 3 or 4) but as it absorbs moisture it becomes brown and when saturated, almost black.
But, I repeat, there is no time/mileage interval and if operating in a dry area could be considered life of vehicle, just like power steering fluid.

Bottom line, flushing, in particular with solvents, is unneccessary and potentally harmful.
Standard drain and fill proceedures are adequete and preferred.

Rob


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