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post #1 of 6 (permalink) Old 03-05-17, 10:41 AM Thread Starter
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Grand Marquis Tranny Fluid Service

Hi, New here, hello to all.

Have a 2003 and 2006 Mercury Grand Marquis GS.
I was looking at a site called openbay and it states the 03 should have the automatic transmission fluid changed every 30,000 miles and the 06 should have it changed every 150,000 miles.

The 03 just turned 68,000 miles
The 06 just turned 100,000 miles

Anyone know if these maintenance schedules are true?

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post #2 of 6 (permalink) Old 03-05-17, 01:13 PM
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Re: Grand Marquis Tranny Fluid Service

Couldn't find a Mercury Marquis maintenance guide but did find one listed under the 06 Ford Crown Vic.

This is the original Ford maintenance schedule that was included with the Crown Vic owners manual. http://www.fordservicecontent.com/Fo.../06frdmg3e.pdf
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post #3 of 6 (permalink) Old 03-05-17, 01:54 PM Thread Starter
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Re: Grand Marquis Tranny Fluid Service

Thanks. That info seems to be right in line with openbay for the 06.
I'll go through my manuals I have for the 03 and see what I find.

These cars are great. The 03 is Matador Red Metallic, looks Burgandy, runs and drives perfect with 68k on it.
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post #4 of 6 (permalink) Old 03-05-17, 04:22 PM
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Re: Grand Marquis Tranny Fluid Service

The 03 should be every 30,000.
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post #5 of 6 (permalink) Old 03-06-17, 12:53 PM
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Re: Grand Marquis Tranny Fluid Service

With proper care your car will continue to run and drive perfectly with 200,000+ miles on it! Enjoy it!
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post #6 of 6 (permalink) Old 03-18-17, 08:26 PM
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Re: Grand Marquis Tranny Fluid Service

I wouldn't trust any fluid to last 150K

I'd be doing changing fluid every 50K...at least some of it.
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