preventitive mait. suggestions - Ford Powerstroke Diesel Forum
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post #1 of 3 Old 09-27-2009, 05:24 PM Thread Starter
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preventitive mait. suggestions

i am planning on doing a bunch of pm soon i will be changing front and rear diff lubes transfer and trans lube (6spd) for the transfer and trans i am planning on just regular mercron atf (what ever is specified i think its merc.V )

i am looking for input on grades of gear lube i think the book says there are a couple options etc but looking for your input on grade and synthetic or dino and some reccomendations on brands i would like to keep it lower dollar

also my next oil change will be 200,000 mi is there anything special i wanna do
(i dont have the owners manual so i dont have the mait. interval specs)

any input to keep her running longer will help and be very appreciated
thanks in advance

99 f250 std cab w/8 ft service box 4wd 7.3l 6spd manual black

-foil delete
-custom straight pipe (out the side)
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post #2 of 3 Old 09-28-2009, 06:28 AM
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Check all hoses, belts and vacuum lines, change all fluids, the manual trans can use the Mercon V, I would run synthetic there, if you have a LS rear end, buy a good quality Dino lube without the modifier, Ford calls for 8oz of modifier, this is why their LS gets a bad wrap and it never works as designed, fill with fluid and add 2-3 oz and drive some tight figure 8's, if you hear chatter keep adding 1oz at a time until the chatter goes away. I have yet to have one take more than 5oz's, most are 3-5 oz's. I would flush the coolant and replace with a true ELC like Fleetrite, I would also add a coolant filter while doing the flush. I would also flush the brake fluid, should be done every two years but nobody does it. It will take 3-4 quarts. Brake fluid collects water and the water will collect at the low spots ( your calipers) not some place you want water!!! I would also flush the PS system and replace with synthetic ATF fluid, makes a huge difference. If you have any ? PM me.


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post #3 of 3 Old 09-28-2009, 06:37 AM
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lube the caliper pins as well. i need to remember that myself..........

00' F 250 4x4
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