jacob next time i'm home i might just take you up on that challenge where at in montana you from i'm orginally from wilsall north of livingston but my mom now lives in libby up in the north west corner and my dad is still in the bozeman area cause my mobil one hasn't had any problems either on any of those things even at 5000 miles it still looks like it is nearly new when i change it i even forgot to change my oil one time and i went another 3000 miles and it still came out looking like it was just beginning to be needed to be changed so if you want to go there we can

 

honestly what it comes down too no matter what people tell you its all personnal opinion i am by no means an expect and i don't claim to be i'm just telling you what i have done in the past and present and unless somebody is a ASE mechanic for ford and is currently workind at a dealership then they would be the expert and no one else would be able to defute what they say me i'm working on my ASE certs but i'm going for deisel mechanics that is unless the army keeps turning me off from it anyways hope all this helps and keep on driving ford lol

 

I saw the royal purple with the additive is 20$ a bottle. I need two. Then additive and front oil n Sealant. This is gonna be a pricey change

 

you are absolutely right kdawg its all about personal preference. i mean damn how much of what you see in a commercial is bull****? Id say atleast 75% they will say anything to get you to buy that product. its all a game who can come up with the best/coolest looking label and container. lol and i live in bozeman i don't wanna go that far there's really nothing to prove. most oil does what it is supposed to do. and libby? Why would anyone move there? I had to take a 32 hour course on asbestos and saw all kinds of videos people in libby still have to wear poly suits and respiratory gear just to mow the lawn. how crazy is that? The real danger of asbestos is very scary.

 

my mom moved there before the asbestos cleanup began so yeah i heard all about it but hey free health care from the gov't now that i'm in the army lol anyways and yes your right all oil does what it is supposed to do me i just roll with the cheaper stuff and change it on a regular basis

 

how often should I be filling up my diff fluid in my front and back? 2003 super crew fx4

 

I heard bout every 100k miles. I'm at 165 so it's due

 

thanks and do I change it or do I just check the level and fill it up accordingly?

 

Change it, the oil goes bad and gets black n dirty. U shouldn't have to top off unless u have a leak.

 

that's what I thought, thanks