true

 

Thats my justification for the mobile one. i go 7,000 miles between changes.

 

I know it is synthetic but that is far more miles than I would put on any oil. True, synthetic does not break down as fast but the contaminants still collect and that is as bad as oil break down.

 

You have no problem running that long on Mobil1, heck half of this site does that.

 

I've used Motorcraft Synthetic blend 5w20 from day one.

My 3.0 takes a lot of abuse and still runs perfect at 80,000 hard miles.

 

I use 10W30 full syn

 

i use nothing but mobil 1 10W30 in the vette, and the ranger, and WIX filters

 

can rem what oil (i think 5w30) on the 2001. ive always used valvoline highmilage synthetic and started using K&N oil filter this last oil change.

 

on my 96 4x4 3.0 5 speed.with 157xxx on it...i used 5 20 last time but every oil change i put half a quart of lucas heavy duty oil stabilizer cause my engine has a slight knock for some reason....its been there since i let my ex girlfriend drive it...hahaha

 

Iv always used 10w30 in all seasons, and my truck has never gave me no problems. Should i use 5w30 in winter? or just keep it the same.

 

my manual says 5w-20 but I get bad timing rattle here lately...

 

Lifter rattle? 'Cause you don't have the timing chain like a 4.0.

 

I run 5w-30 in my truck with no problems and its been 2 years.

 

i took it to a quick lube and they put 10w40 in my 98 4.0, i thought that sounded weird but by the time i realized it they were done, is that a good choice for my truck, im going to do it myself next time(next week) so what do u guys think? it does run fine, but maybe it could be running better if i put a different grade in it??
Thanks
Anthony.

 

I use 5W-30, cap and manual both say 5W-20. I like 5W-30, and so does the Ranger.

If Ford gave me a monthly cheque, I'd use Royal Purple 5W-20.......but until that day.....5W-30 is good enough.

 

yeah thats it, better oil stop that or am I just SOL?

 

I just started the transition to Royal Purple from all that dino oil I've used for 3 years. Used Mobile 1 full syn truck and SUV oil. Thats just to clean out all the dino crap.

I need my truck every day and its my life line. I will spend whatever I need to to keep it runnin strong and never let me down, just my 2 cents.

 

ill be putting 0w-30 in next oil change

 

Try flushing the engine next time you do an oil change, maybe just a clogged lifter oil passage, and yes, better oil will be less likely to clog it up.