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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 10-19-2005
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I have always wondered about this.

Can you change back and forth with natural and sythetic oil in your truck, will it affect the engine in any way shape or form?
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  #2  
Old 10-19-2005
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no...once you go synthetic never go lass then half blend
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  #3  
Old 10-19-2005
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I am just switching. But, I've heard once you go synthetic you shouldn't switch back.
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Old 10-19-2005
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It doesn't matter. You can go back and forth with modern synthetics with no trouble. I don't know WHY you'd switch back unless you couldn't get your favorite brand of synthetic -- but you can do it. The oils are actually "mixable" now.

That deal about not mixing them goes back to the days of "ester" based synthetics. Mixed with conventional petroleum they had a tendency to "gel". Modern synthetics like Mobil 1 and Amsoil are based on PAO (polyalphaolefin) and they are totally compatible.

Give it not a thought. But I won't use anything but synthetics anymore. My brand of choice is Amsoil but there are several good ones these days.
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Old 10-19-2005
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Yes you can. It doesnt effect anything. But like John said, why would you want to switch back and forth? My truck has never had anything but Mobile 1 in it since change one (yes I have documentation)..
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  #6  
Old 10-19-2005
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OK thanks because I use Penzoil which is natural and Im thinkin about switchin to synthetic. Now i can with no worries just thought id ask before i did it.

Edit: I bought my truck used there fore had no clue what kind of oil was used before i had it, and my dad has always been a natural man so i just used what we had, and i want something better. Thanks guys.
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  #7  
Old 10-19-2005
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Ya it helps a ton!! I love it, it makes the truck run a little cooler
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  #8  
Old 10-19-2005
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Amsoil full synthetic transmission fluid smoothed out the 2-3 shift in my 5R44E transmission that I always HATED the "bump" of. I have to really do something wierd now like back off on the throttle at just the right moment to get a bad shift now. I was hoping for less wear, but I was totally blown away at the smoother operation.
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  #9  
Old 10-19-2005
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Nice Ill look into that too, now that you mention it i need to replace all my fluids, and my plugs too, any plugs in mind that would be a good choice?
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Old 10-19-2005
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wow...i'd never go into the info i have seen from Ford where my dad run the dyno's at Ford they tested every brand of oil with wear on a 4.6L supercharged i do beleave the motor was or a 5.4L supercharged...you boys would never beleave me any who...
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  #11  
Old 10-19-2005
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John... is there anything you DONT have an answer for? You're like the freakin RF Tech Wizard. I think we should make a forum. "Ask John ANYTHING".
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  #12  
Old 10-20-2005
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Yeah, but would anyone BELIEVE me. I post links generally to what I feel is confirming information if there's a dispute.

The government ran extended wear tests as well on synthetic vs. conventional oils and in all runs the synthetics were so superior they basically said the wear didn't fit their scale! Ford may or may NOT have been straight up in those tests.

Have you noticed that really high performance engines actually SPECIFY synthetic now, like Corvettes and what not? Also, manufacturers are "sensing" oil quality in high end vehicles and telling people when it's probably time to change -- it's never at 3000 miles by the way. More and more oils are becoming "synthetic blends" as well (like the Motorcraft for our trucks) because the synthetics ARE superior -- just more expensive. It makes no sense to use full synthetic, non-hydrocracked oil, if you're going to recycle it every 3k miles.

I know too many folks now who use synthetic with testimonials like my tranny one and so on. The evidence is in and the biggest indication is that one of the MOST VEHEMENT attackers of synthetics at one time, Mobil, is now one of the leading marketers of synthetics and their biggest proponent. Even they are slowly "ratcheting up" the recommended drain intervals on their oils, when at one time they said that was not a good idea.

Seems to me that Mobil must know something. It CAN'T be that Amsoil was too much of a competitor and Mobil had to compete -- their sales don't come close to Mobil.

Zach, I'd believe that the test occured and the results were posted if you can show us. Otherwise, it's heresay evidence, lol.
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  #13  
Old 10-20-2005
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Quote:
Originally Posted by n3elz
Zach, I'd believe that the test occured and the results were posted if you can show us. Otherwise, it's heresay evidence, lol.
thus why no one would beleave me i dont have acess to the info anymore. and I am also hell not "supposed" to be in that building but my fathers boss knows me and dont mind. hell another people dont beleave me is a see 90% of "new" ford vehicals atleast a year before its released to the public but no cameras allowed in that building. I also have seen tons of 4 door rangers hell there is one in the hallway(when i say hallway there's are huge you can fit like 3 car wide in there) right outside my dads room. its white 99. most people dont beleave me because I am have no "proof" to show becuase i would rather have my dad not get in trouble with his son running around with a camera. hell my father tested the lightning motor before they had the plans finished for the lightning. it sucked in the beginning. but eh o well.
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  #14  
Old 10-20-2005
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see John Griggs. PH.D In Ford Ranger Technology
Great to have you hear man, truely a valuable asset to this community.
You are loved
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  #15  
Old 10-31-2005
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What is the change interval for synthetic? How about for synthetic blend?
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  #16  
Old 11-01-2005
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what about that semi synthetic stuff my father gets his oil changed at jiffy lube abd thats what they put in his exploder, i was going to chang over my truck next week for its first oil change since i baught it. thanx

Nick
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