Automatic Transmission

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Apr 10, 2008 | 10:57 PM

dantsg

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Joined: Mar 2008

Posts: 147

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From: Miami Lakes, Fl

Automatic Transmission

At 160000+ miles what modifications would be helpful in prolonging and improving the stock auto on a 98 F150 XLT 4x4 with a 5.4?

Apr 11, 2008 | 09:10 AM

projectSHO89

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Joined: Jan 2004

Posts: 19,760

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From: St Louis

Prayer (lots of it) and an large external stacked plate cooler.

Apr 11, 2008 | 04:46 PM

97Handshaker

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Joined: Apr 2006

Posts: 435

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From: northern michigan

a tranny cooler may help, unless you already have one. but maybe switching to synthetic tranny fluid, like amsoil or royal purple

Apr 11, 2008 | 09:08 PM

sclariat

Junior User

Joined: Apr 2008

Posts: 99

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From: Manitoba

I've started regular transmission flushes too. These new trannys aren't like the old ones where the mentality was "if it ain't broke, don't fix it". I noticed crisper shifts after the flush so it definitely helps.

Apr 11, 2008 | 10:17 PM

BLK94F150

Postmaster

Joined: Sep 2002

Posts: 3,077

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From: None of your business

Just keep doing what you are doing. Regular flushes and a cooler (with a gauge) if you tow a lot.

At 160000, I wouldn't worry about synthetics. The days where that might have helped are long gone.

Mike

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