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4.0L OHV & SOHC V6 Tech General discussion of 4.0L OHV and SOHC V6 Ford Ranger engines.

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  #1  
Old 04-22-2007
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switch to syn. oil ?

i got 28,000 and i'm debating on switching to either mobile one or royal purple synthetic instead of conventional. I have a few questions.

1. I operate in ALOT of dust and stop N go traffic so i'm affraid 7,000 -10,000 miles between oil changes is a bad idea and maybe every 3,000 with conventional might be better .

2.Can i go back to conventional oil after i have used synthetic ?

3.royal purple or mobile 1 ?

4.whats the best oil filter ? motorcraft or k&n

5.should i change it after 3,000 for the first time cuz it said to clean the motor ?

6.anything else i should know about?
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Old 04-22-2007
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I have used Mobil 1.

1. I drive in much dust and after 7,000 miles my oil was very dirty. It is much cleaner after 3000 with conventional oil so I stick with conventional in my truck. The wife's car gets Mobil 1 Extended life and gets a change every 10,000.

2. You can go back and forth not a problem.

3. I have heard good things for both.

4. ??? Don't know but I do know that most will curse out a fram. I have never seen a noticable difference in any oil filter I have used.

5. Never heard of "cleaning" the motor with a 3,000 mile run. Try some motor flush. Cost like 5 bucks. Read the instructions on the back you dump it in right before an oil change it really gets the gunk out. I used it in my 88 B2 and it helped it to run better.

6. ??
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  #3  
Old 04-22-2007
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i drive in a lot of dust too and i but mobile 1 synthetic blend. its supposed to be good for 7500 but i just go ahead and change it between 3-4k.
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  #4  
Old 04-22-2007
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iv used mobil 1 5000 since the truck was new.. im 99% sure that im gonna change everything to royal purple very soon.

and i will always change my oil at 3k no matter what oil im using
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  #5  
Old 04-22-2007
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I use valvoline and it works great, just regular oil and I change it every 3k miles.
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  #6  
Old 04-23-2007
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1 - Your air filter has a lot to do with that, use paper (I recommend WIX). 7,000 should be fine, but I change at 5,000.

2 - Yes, but why would you?

3 - I use Mobil 1. I've heard that Royal Purple is great for racing, but shears quickly so it's probably not too hot for an extended drain situation.

4 - Motorcraft, Motorcraft, and Motorcraft!

5 - No need

6 - your engine will run smoother, longer, and you should see a slight improvement in fuel economy
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  #7  
Old 04-23-2007
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I have read that royal purple is a wax based oil, and wax based oils are known to cause residue build up over time. I would go mobil 1, or amsoil, that's what I have ran now for 70K with no problems.....
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Old 04-23-2007
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wix or napa filters (same thing), Mobil 1
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Old 04-23-2007
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I do my own engine work. And using mobil 1 with pure-o-later "pure one" filters changed every 5-6k miles my engines are PERFECTLY clean when torn down. Not even the lifters are coked. (which is usually the first to get so)

I use a 5w-30 when the motors have less than 50k on them and 10w-30 on anything over that. Oh and when I'm going to be spraying nitrous I always use 10w-30 as well.


Mobil 1 is still somewhat cheap at $23 for 5 quarts at my local wal mart. (only in the 5 qt jugs at that price)
And I get the filters at advance auto.

Rich

Last edited by wydopnthrtl; 04-23-2007 at 11:14 AM.
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  #10  
Old 04-23-2007
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Do you guys think 150k is too high a mileage to changeover to syn?
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  #11  
Old 04-23-2007
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if its not leaking and doesn't burn oil then go ahead....
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Old 04-23-2007
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Quote:
Originally Posted by Du510
Do you guys think 150k is too high a mileage to changeover to syn?
I would change to it and then change the oil and filter agian in about 2k miles. Then start running it 5-10k in between. Fully sytnhetic oils suspend the particals. During that first change over I'd expect to see the filter get more than it's fair share of debris.

Rich
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Old 04-23-2007
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got off work early so i'm going to do the change today . If they have amsoil i'll run that and if not i'll go with mobil 1. i'll get the wix filter if they have it if not then i know they pep boys has motorcraft cuz i remember stocking the shelves when i worked there .
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  #14  
Old 04-23-2007
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valvoline w/ motorcraft filter ( 21 dollars). change it every 3K.

You'll never have a problem.

No reason to spend extra money.
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  #15  
Old 05-01-2007
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Mobil 1 5w30 full synthetic with K&N filter. Change every 5,000 miles
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Old 05-01-2007
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My truck is still new but always use Mobil 1, change every 5,000.
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  #17  
Old 05-01-2007
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Quote:
Originally Posted by 05DSG
valvoline w/ motorcraft filter ( 21 dollars). change it every 3K.

You'll never have a problem.

No reason to spend extra money.
thats what I just did Sunday, $22 for everything (5q & bosch filter)
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  #18  
Old 05-02-2007
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My air filter is a POS (K&N), but my oil and oil filter is nice. Mobil 1 15,000 oil. and Mobil 1 filter.
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  #19  
Old 05-02-2007
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Quote:
Originally Posted by karrbass4life
My air filter is a POS (K&N), but my oil and oil filter is nice. Mobil 1 15,000 oil. and Mobil 1 filter.
Why do you think a K&N is a POS?
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  #20  
Old 05-02-2007
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just curiou, whats wrong with a fram?thats what Ive always used since my first car.
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  #21  
Old 05-02-2007
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Quote:
Originally Posted by BigRed
just curiou, whats wrong with a fram?thats what Ive always used since my first car.

http://minimopar.knizefamily.net/oilfilterstudy.html

and from another site:
Quote:
My primary concern with this filter are the cardboard end caps- I would be suspicious that the cardboard would deteriorate over time and may come loose, especially considering that the cardboard is in the way (partially) of the oil flow. I would be particularly concerned about this in a racing environment where higher pressures are common.
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  #22  
Old 05-02-2007
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^^^ Yeah, pretty much use anything else but fram. For the price, motorcraft filters cant be beat. On the more $$$ end. Wix, mobil 1, and k&n are great filters...
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  #23  
Old 05-02-2007
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damn, I had no idea, I always got them because I figured they were a major company and they have the grip on them which makes them easy to change so I dont need a wrench to remove them. I think I need to change it soon anyways, but I just did my brother in law's Ram 1500 Sunday and I put a Fram on it, oops.
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  #24  
Old 05-06-2007
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I use Motorcraft filters with Castrol GTX, change every 4000.
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