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  #1  
Old 12-21-2005
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In the dark about motor oil

so what is the deal with motor oil, i just changed the oil in my truck and i used what i alwas use, shell rotella T synthetic 5w-40 anyhow when i was calling around to find someone that carried it(wally world was out) the guy at autozone said he wouldnt use that in a gas engine... wonder why he said that? an i using the wrong oil...

i did notice it was pretty black when it came out today... i change it every 5000 miles and from what i have read i think thats really conservitive.. i have heard people go ALOT longer than that...

anyhow just wondering if someone can shed some light...
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Old 12-21-2005
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idk what the number difference really is but ive never heard of anyone running 5w-40.

shell rotella T atleast to me is more know to run in diesels. idk if that is true or not but that guy may have been under the same impression.

i use Mobil 1 5w-30 Extended Performance and it is good till 15k but i change it around or just after 10k
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Old 12-21-2005
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5w-30 is what I use in the winter. 10w-30 in the summer. I wouldn't use 40 either. Not sure what the consequences are (coughGooglecough). I too Use Mobil 1. Not the fancy extended one because the regular Mobil 1 Synthetic can go 18k and be ok. I do my changes in the 7-10k range. Use a good full synthetic like Mobil 1 or Amsoil and you'll never go back to conventional.
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Old 12-21-2005
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you guys are starting to worry me now.. why wouldnt you use a 40.. ant what do the numbers mean...
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  #5  
Old 12-21-2005
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ok after reading some its is ok to prolly use 5w-40 as it is just for engines that get hotter for more protection. but you dont need it and going to thick prolly isnt good for some things. i would recommend changing back to what it says in the book to use and that is 5w-30.

http://www.carbibles.com/engineoil_bible.html
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Old 12-21-2005
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  #7  
Old 12-21-2005
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i also was doing some googling, and i found out that it is probally ok to run shell rotella T in the ranger, but gas millage will suffer slightly, and it could posibly hurt the cats.. not sure how...

i think ill do an oil chang in 3000miles and change up to a differant synthetic...

is motorcraft oil any good? i saw it at wally worl today, the have a motorcraft sythetic...
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Old 12-21-2005
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i heard motocraft was pretty good, cant be bad if ford recommends it in the manual.
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Old 12-21-2005
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thats what i was thinking... it was fairly cheep too... i think for the synthetic it was 2 or 3 $ a quart...
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  #10  
Old 12-21-2005
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i think it is just a blend, not a full synthetic. but im not sure
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  #11  
Old 12-21-2005
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Oils
# SAE 5W-20 Premium Synthetic Blend Motor Oil
# SAE 5W-30 Super Premium Motor Oil
# SAE 5W-30 Full Synthetic Motor Oil
# SAE 15W-40 Super Duty Diesel Motor Oil
# SAE 10W-30 Super Duty Diesel Motor Oil
# SAE 10W-30 Super Duty Motor Oil
# SAE 10W-30 Premium Motor Oil
# SAE 10W-40 Premium Motor Oil

got that from here

http://www.motorcraft.com/products.do?item=15
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  #12  
Old 12-21-2005
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ok i should be good now...

i went to napa to get anouther oil filter, and i noticed they had napa brand full synthetic oil... so i got some of that..

5w30
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Old 12-21-2005
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napa = valvoline or how ever you spell it. good stuff
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  #14  
Old 12-21-2005
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I use nothing but the Mobil 1 with the Blue Top.
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  #15  
Old 12-21-2005
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according to my buddy at ford/toyota, you are supposed to used 5w-20 on newer (01+) rangers, at least durring the winter


ive got 5w-30 in mine now, and when i start it up after the weather being under 5deg or so, ill have no oil pressure till it warms up


*edit* this is all Non-synthetic and semi-synthetic
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  #16  
Old 12-21-2005
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Quote:
ok after reading some its is ok to prolly use 5w-40 as it is just for engines that get hotter for more protection. but you dont need it and going to thick prolly isnt good for some things. i would recommend changing back to what it says in the book to use and that is 5w-30.
So if you're driving hard and really getting the temp up, would it be fine to use it?

And I use 5w-30 synthetic in the winter and 10w-30 in the summer. Only heard of the 10w-40 in diesels
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  #17  
Old 12-21-2005
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i dought you will ever need more than the 5w-30, but idk for sure.
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  #18  
Old 12-21-2005
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i use 10w-30, castrol drive hard(forgot the real name lol) and change every 3000 miles, my dad uses rotella T in his diesel, but i would NEVER go more than 3000 miles on an oil change, i maybe wasting money but i feel that is more than enough mile on oil
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  #19  
Old 12-21-2005
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Quote:
Originally Posted by quicksilver2001
i use 10w-30, castrol drive hard(forgot the real name lol) and change every 3000 miles, my dad uses rotella T in his diesel, but i would NEVER go more than 3000 miles on an oil change, i maybe wasting money but i feel that is more than enough mile on oil

actually ive read reports that the more you change your oil the harder it is on the engine to an extent. i mean you still need regualr oil changes but if you got to 5k or 10k it would be better on it. if your oil is rated for it.
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  #20  
Old 12-22-2005
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How are frequent oil changes hard on a motor?
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  #21  
Old 12-22-2005
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i was wondering the same thing...maybe something with the seals or somthing...
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  #22  
Old 12-22-2005
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First off its perfectly fine to use the 5w-40 rotella T.
Second the 4.0 requires 5w-30 not 5w-20.

Yes you might lose .1mpg by using the rotella t.
It has a more robust additive package for diesels but IS
API SL certified for use in gas engines..
It also happens to be Diesel certified too API CI-4+

This is all from memory.. yes I have to much time on my hands.

Summary.. Its good oil dont be afraid to use it.

Even Mobil 1's "truck and suv" oil is 5w-40

Dont listen to any stories about 40weight being evil either
they mostly stem from the old 10w-40 crap oil that would break down
and sludge up from the viscosity improvers when idiots would leave it in
for 10000+ miles.

Edit it has been shown with several studies its possible that FREQUENT
oil changes to produce more wear metals.
With a good syn oil like rotella T.. I would go at the minimum 5000 miles or 6monthes. Its a waste to change any sooner.

Note there are many different "rotella t" oils the most popular
are the syn 5w-40, and the Regular 15w40

Rand
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  #23  
Old 12-22-2005
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Well I know it's of no use but I run Mobil 1 Synthetic 0w-20. I was running 5w-30 and it was noticeably louder (rattles and knocks) once the oil had a few thousand miles on it.
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  #24  
Old 12-22-2005
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You are a total moron if:
-You think frequent oil changes is detrimental to your engine.
-You run more than 3000 miles on ANY oil.
-You think fancy, expensive, synthetic oil doesn't contaminate because it has "detergents" in it.

I have heard some of the stupidest crap from people on the topic of oil here. I am appauled at how stupid someone could be to say stuff like...

"With a good syn oil like rotella T.. I would go at the minimum 5000 miles or 6monthes. Its a waste to change any sooner."

or

"it has been shown with several studies its possible that FREQUENT
oil changes to produce more wear metals."

Heres a good one

"but if you got to 5k or 10k it would be better on it"

The only GOOD thing I have seen in here is this...

"i would NEVER go more than 3000 miles on an oil change, i maybe wasting money but i feel that is more than enough mile on oil"
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  #25  
Old 12-23-2005
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Quote:
Originally Posted by 3LiterBeater
You are a total moron if:
-You think frequent oil changes is detrimental to your engine.
-You run more than 3000 miles on ANY oil.
-You think fancy, expensive, synthetic oil doesn't contaminate because it has "detergents" in it.

I have heard some of the stupidest crap from people on the topic of oil here. I am appauled at how stupid someone could be to say stuff like...

"With a good syn oil like rotella T.. I would go at the minimum 5000 miles or 6monthes. Its a waste to change any sooner."
i dont think i tottaly agree with you on that... that is the whole purpose of a heavy duty deisel oil, to extend the iterval of an oil change... i have heard of people running a good synthetic, rotella, amsoil ect.. and ONLY changing the filter at 3-5k, so they do a oil change about every other filter...

now that i know what i do.. ill probally be going back to retella in the spring/summer 5w40
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