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  #1  
Old 11-28-2007
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Synthetic Oil Change Intervals

I have ran Mobil 1 Full Synthetic for a while and am super happy with it. I've been changing it every 5000 miles but I think that it can last longer. I've heard of people running it 7500 miles and even 10000 miles.

If you run it for like 10000 miles can you run it with the same oil filter or do you change the oil filter like half way thru?
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Old 11-28-2007
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I would change the filter.
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Old 11-28-2007
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15k on mobil 1 ep with motorcraft filter

sometimes i change the filter at 7.5k

Oil comes out like chocolate colored never jet black.


Some guys running Amsoil change theirs every 25k or once a year.
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Old 11-28-2007
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I've heard about the Extended Performance and I think thats what I'm gonna use next. Can't beat 15k with 7.5k oil filter changes. I'll just keep a eye on the color.
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Old 11-28-2007
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I go 8k-10k on my synthetic. Its great stuff.
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Old 11-28-2007
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No matter what oil you run, on extended drain intervals I would say, change the filter every 5K and top off what you have lost. I usually do 15k with amsoil, with a filter every 5...
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  #7  
Old 11-28-2007
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i just switched to mobil 1 but i bought a k&n oil filter in hopes that i wouldnt have to do the mid change swap. i am planning on going 8k with mine. thats what my father does in his deville.
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Old 11-28-2007
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i change my castrol synthetic ever 3k no matter what.
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Old 11-28-2007
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Thats just a waste of money
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Old 11-28-2007
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I'm planning every 6 months or 5,000 miles whichever comes first, and it'll probably be the 6 month interval, as 6 months is a long time to collect various engine deposits, contamination , condensation etc....

I'm running Mobil 1, with a Motorcraft filter.
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  #11  
Old 11-28-2007
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I go 5000 on my Mobil 1. If I extended the OCI, I would change the filter every 5000 no mater what.
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  #12  
Old 11-28-2007
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Quote:
Originally Posted by 04blackedge
Thats just a waste of money

x2
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Old 11-28-2007
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How much is a Motorcraft filter from the dealer
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Old 11-28-2007
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You can get them from Autozone for like 3 bucks.
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Old 11-28-2007
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Quote:
Originally Posted by ranger
i change my castrol synthetic ever 3k no matter what.
X2-I run royal purple 5w-20 with K&N gold series filter
change it every 3K no matter what-although it helps i get a secret special discount so its real cheap

How many comments you think we will get for this one Ranger
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Old 11-28-2007
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you guys are stupid. hahha jk congrats on having money and drugs...
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Old 11-28-2007
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Quote:
Originally Posted by 04blackedge
Thats just a waste of money
How?

I use mobil 1 synthetic with Lucas Synthetic every 3k miles.

When someone shows that dirty oil is "good" for your motor, I'll believe it. At 3k miles my oil is almost chocolate. I always change my oil when it looses is translucency.

You can never change your oil too much. It's cheap protection and insurrance. I change my ATV oil EVERY ride. At $10 an oil change, it's expensive, but I'd rather spend that than 900 on a top end rebuilt every 6 months.

On a truck, you especially don't want dirty oil running through the motor. It loooses it's lubricity and it's basically sludge.
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Old 11-28-2007
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Quote:
Originally Posted by M50B06
X2-I run royal purple 5w-20 with K&N gold series filter
change it every 3K no matter what-although it helps i get a secret special discount so its real cheap

How many comments you think we will get for this one Ranger
x2, I get mine for cost...that helps. My filter is under $1.50. My oil is about $10 for mobil 1 syn.
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Old 11-28-2007
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Quote:
Originally Posted by jrpro130
How?

I use mobil 1 synthetic with Lucas Synthetic every 3k miles.

When someone shows that dirty oil is "good" for your motor, I'll believe it. At 3k miles my oil is almost chocolate. I always change my oil when it looses is translucency.

You can never change your oil too much. It's cheap protection and insurrance. I change my ATV oil EVERY ride. At $10 an oil change, it's expensive, but I'd rather spend that than 900 on a top end rebuilt every 6 months.

On a truck, you especially don't want dirty oil running through the motor. It loooses it's lubricity and it's basically sludge.
True, I was going off the basis that my oil still looks like new when I was taking it out at 5,000. Why is your oil getting so dirty that quickly?
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Old 11-28-2007
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I never used it in the ranger.. but the vw dealer puts mobil 1 synthetic in my car and I go in every 5k miles to get it changed.. I've been very stringent on going in on time because the 1.8T is more susceptible to sludging, from what I hear anyways I guess that's why synthetic is required for my car.
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  #21  
Old 11-29-2007
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Quote:
Originally Posted by jrpro130
How?
At some point you begin to just waste money and time. Then your so called cheap insurance is costing more than the engine itself.


3k on syn seems a bit overkill to me. Now if it was a turboed engine then 3k would seem about right if you have a heavy right foot.
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Old 11-29-2007
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Quote:
Originally Posted by Blhde
At some point you begin to just waste money and time. Then your so called cheap insurance is costing more than the engine itself.


3k on syn seems a bit overkill to me. Now if it was a turboed engine then 3k would seem about right if you have a heavy right foot.
Maybe you missed the part that my oil change is about $12. A top end or bottom end rebuild for that matter can cost upwards of $2k.

You HAVE to change your oil at some time...so lets just say this... $12/oil change...

166.66 oil changes is an engine rebuild. Thats $2000

At lets say 3000 miles an oil change that is 499,980 miles...I know my truck won't make it to that...

So how is it costing more than a top end rebuild? I'm not understanding that part? I have 82k on my truck, I bought it with 36k, so I've drove 46k miles, at 3k mile intervals that is 15.33 oil changes. At $12 a pop...thats $184 dollars in oil changes.

Now lets just say that you don't get oil for cost...it's about 25 an oil change with filter. Now it would be $383.25 so far that I've spent in oil changes. If I were to stretch that out to the $2000 mark of a top end rebuild (that 2k is just a number to use, top end rebuilds in my area are costly, mechs. know they can rape you, so they usually do) I can get 80 oil changes for $2000. So that is 3k mile intervals, that is 240,000 miles of oil changes...I doubt my engine will make it to that either, but it's good to try!

Now lets go with the "saving money aspect". You say you change oil at 7.5k miles...I have drove 46k miles on my truck.

Thats 6.13 oil changes at $25 a pop. That is $153.25 in total oil changes if I did the 7500 mile oil change. I'm not even including the fact that the filter should be replaced halfway through...

So you would save aprox. $230. That is a little chunk of change...but enough to rebuild a topend? No, I don't think so.

Lets say you do 15k mile oil changes, you save $308.25. Now thats an even bigger chunk of change, but enough to rebuild your motor? Nope.

Now I'm even counting the fact that parts to rebuild the motor is about 400...but who's going to do it? The average joe can't! I can't, but I know friends who will do it for me, even then it's going to cost a little more for a bill or two for them and pizza and beer.

So the theory that these long oil changes saves you enough money to rebuild your topend, it's not true. You save a mere 300 dollars if you do 15k mile intervals, of course its more over time, but I'm just using my exact case for an example.

The reason my oil gets so dirty is that I tow. My truck is my tow truck for now, I tow 3k# about 2x a week.

So if you guys want to save $300, I guess you can change your oil when it's chocolate black and 15000 miles...but I'd rather spend the money. I honeslty think it's being cheap not changing your oil at 3k or even 5k miles, not to mention it's lazy, and most people admit it. I'm doing the cheapest maintenance I can, thats changing oil...not that hard. TAkes me 10mins max.

The cost of the oil, say even 500 so far, is CHEAP insurrance. Compared to 2k for a rebuild.

The big difference is that the inside of my motor, besides for carbon, is pretty decently clean. I had to have a few gaskets and seals replaced, and it's pretty darn clean...compared to another ranger that was in the shop with about the same miles...who did LONG oil change intervals.

And I can guarantee if I didn't keep up on my oil, I would have had to rebuild so far...my truck has seen a lot of crap. It's been sunk, mudd(ed), etc. I am hard on it...hence why I don't mind spending the money on the oil change.

Like I said, if you think I'm crazy with my truck, I change my oil on my 4 wheeler every/every other ride depending. I only put about 12-15hrs on it between oil changes. Thats about 50 miles...crazy, I know, but top ends on those are about 1200. That oil cost me 10 a change. Cheap insurrance, I play in the water, and mud. It's a toy.
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  #23  
Old 11-29-2007
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I tow often and my oil is still clean at 5k, sorry...
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  #24  
Old 11-29-2007
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I use Valvoline synthetic with an additional micron by-pass oil filter and use Motorcraft oil filters. I change the Motorcraft oil filter every 5,000 miles; the oil every 20,000 miles and the micron filter every 25,000 miles.

This extended oil change scedule is based experience I had with my 89 Ranger. I change the oil in it every 25,000 miles and had the oil analyzed. After 20,000 miles the viscosity of the oil started to increase but everything else was perfect.

I drove that 89 Ranger almost 200,000 miles fromt the day I bought it new. The engine ran better at amost 200,000 miles than it did new. It would still use no more than 1 qt of oil in 5,000 miles when I sold it to a co-worker. He is still driving it with no problems with well over 200,000 miles on it.

Don't tell me oil needs to be changed every 3,000 miles. If you want to do it that often, it is certainly up to you but it is not necessary.

Without the micron filter I would probably change oil at around 5,000 mile intervals.
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  #25  
Old 11-29-2007
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What's so hard about following the manufacturer's recommendations ?? The owner's manual is very clear, 5,000 miles or six months, whichever comes first.
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