100,000 MILE SERVICE

[dbrown4bbl]

Hey y'all: my 2003 MM is closing in on 100K. What are your recommendations for the 100K service and what do y'all think a 100K service ought to cost. I'm in NorCal. Thanks!

[fastblackmerc]

Hey y'all: my 2003 MM is closing in on 100K. What are your recommendations for the 100K service and what do y'all think a 100K service ought to cost. I'm in NorCal. Thanks!

The info should be in the owners manual.

[88LTDCV351]

Spark plugs need replaced for sure if they are the original

[Fastbob]

Plugs all filters and all fluids except the battery electrolyte and the washer fluid. Toss a new serp. belt on for good measure

[RF Overlord]

^^^what fastbob said^^^

Most of what needs doing is very simple to DIY...I have no idea what labour rates are in Northern California, but you can save a ton of money...

[Fastbob]

If it were mine I might even stick a water pump on it at 100,000 also.

[NXSBOB]

Time for a fuel pump.

[loud2004marquis]

Also a tensioner for the serp. belt.

[Motorhead350]

If it were mine I might even stick a water pump on it at 100,000 also.

233,000 on my pump and it's fine. Just my experience.

[J-MAN]

233,000 on my pump and it's fine. Just my experience.

With all the engine swaps by others how can you be sure?

[fastblackmerc]

Also a tensioner for the serp. belt.

Why just the tensioner? I'd replace the tensioner and the idler and the belt. They all go round 'n' the same amount getting the same wear.

Flush the cooling system
Flush the brake system