Notices
2007 - 2014 Expedition & Navigator 2007, 2008, 2009, 2010, 2011, 2012, 2013 and 2014 Ford Expedition and Lincoln Navigator

Switching to Amsoil

Thread Tools
 
Search this Thread
 
Old Aug 17, 2009 | 09:13 PM
  #16  
Mustang6147's Avatar
Mustang6147
Posting Guru
Joined: Mar 2007
Posts: 1,191
Likes: 1
I always error on the side of safety... It was hard enough for me to go 5000 miles. The way the big fleets do it, is they run, constantly monitoring fuel economy, then when it drops, they dump the oil. I had a Crown Vic. I tried that concept, and at 2700 miles, the fuel economy dropped (conventional oil) and at 3600 it dropped with synthetic. Now the mileage wasnt exact numbers, so, but it was in that range.
 
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
matowns21
1994.5 - 1997 7.3L Power Stroke Diesel
19
Dec 30, 2011 09:27 AM
mabc926
Pre-Power Stroke Diesel (7.3L IDI & 6.9L)
31
Sep 19, 2010 02:04 PM
ranger rules
General Automotive Discussion
20
Jun 4, 2007 05:23 AM
ford390gashog
Oil & Lubrication
83
Aug 31, 2006 10:39 PM




All times are GMT -5. The time now is 03:46 AM.

story-0
10 Things Every Truck Owner NEEDS (2026 Edition)

Slideshow: the best gifts for dads & grads

By Michael S. Palmer | 2026-06-02 21:45:57


VIEW MORE
story-1
Rezvani's Latest Post-Apocalytic Monster Is a Ford F-150 Raptor Underneath

Slideshow: Called the Fortress, the 850-horsepower pickup combines Raptor underpinnings with military-inspired features, survival equipment, and a starting price of $285,000.

By Verdad Gallardo | 2026-05-30 18:33:59


VIEW MORE
story-2
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer

Slideshow: 10 most expensive Ford trucks ever sold on Bring a Trailer.

By Joe Kucinski | 2026-05-27 16:24:34


VIEW MORE
story-3
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)

Here's everything that has changed for the latest model year.

By Brett Foote | 2026-05-27 16:17:28


VIEW MORE
story-4
Top 10 Ford Truck Tragedies

Slideshow: Top 10 Ford truck tragedies.

By Joe Kucinski | 2026-05-18 19:34:33


VIEW MORE
story-5
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make

And it might be even better than that.

By Brett Foote | 2026-05-18 19:26:42


VIEW MORE
story-6
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!

Slideshow: Does lowering an F-150 Lobo RUIN the ride quality?

By Michael S. Palmer | 2026-05-18 19:20:37


VIEW MORE
story-7
Ford's 2001 Explorer Sportsman Concept Looks For a New Home

Slideshow: Ford's bizarre fishing-themed Explorer concept has resurfaced after spending decades largely forgotten.

By Verdad Gallardo | 2026-05-12 18:07:46


VIEW MORE
story-8
10 Best Ford Truck Engines We Miss the Most!

Slideshow: The 10 best Ford truck engines we miss the most.

By Joe Kucinski | 2026-05-12 13:09:47


VIEW MORE
story-9
2026 Shelby F-150 Off-Road: Better Than a Raptor R?

Slideshow: first look at the 810 hp 2026 Shelby F-150 Off-Road!

By Brett Foote | 2026-05-12 12:50:07


VIEW MORE