What do you think?

I agree with the longer period between oil changes. I have been ASE for about ten years and i change my oil at a min of 5000 but most of the time its closer to 6500 depending on type of driving( highway miles = more miles). I have only ever had one engine ever show excessive wear and that was the one i changed the oil every 2500 cuz i drove it hard.just my .02 but i think there right people waste to much money and oil changing every 3k.
 
My wife's Hyundai Santa Fe recommends oil changes every 7,500 miles. I was shocked, but have stuck to that schedule. The car has 140,000 miles on it now, runs perfect, and uses no oil. Her commute to work is a lot of highway driving, and she doesn't flog it, so I guess it is good.

My new to me 2010 Toyota Sienna recommends every 5,000, so I guess I'll stick to that.
 
I've been saying this for years, from the time I learned about oil analysis. I've seen studies where they looked at fleet vehicles that were going 25k or more on a change with no ill effects. NY cab drivers going tens of thousands on a change, just analyzing a sample every few thousand. Tighter tolerances, less blow-by, and more efficient fuel injection mean less fuel making it into your oil, breaking it down. Just one of the many reasons you should be able to push your schedule out. I'm currently going between 8k and 10k on my wife's 2008 Scion xB on O'Reilly synthetic.

BTW, according to the manual, my 88 Suzuki Samurai has a 7500 mile recommended oil change schedule.
 
i work for Land Rover and our service intervals on the new ones is 15,000 miles, but its on a full synthetic oil 5w-20
 
Wife's Mazda5 schedule is 7500. Its pretty dark by then but not grimy. I'm sticking with it, since its what they claim work..
Its also 5w20.
 
bmw is once a year or 15000, good running machines, but they always sound like they're about to fall apart.
 
I go between 8 and 10k in my Silverado. That's usually when the oil life monitor chimes anyhow. My Jeep I'll do every 7500 because that's the longest service interval selectable in the drivers information center. Both of those I use Mobil1 full synthetic 5w-20.

The wife's Charger has a lifetime warranty, and Dodge wants me to change it every 3k. I usually go 4 and change then call them up. I don't even know what they put in it.
 
5000-7500 is an ok interval with a synthetic oil.
try doing it with a jiffy lube recycled oil and your asking for trouble.
i would also be careful with nc being an e85 state because it does have an effect on intervals.

think of this, gm says dexcool is 100,000 mile coolant. have you ever seen dexcool after 100,000 miles? at 100,000 it's already eaten your plastic intake gaskets and played hell on all your sensors.

i go 5000 on my vehicles, but i also run 1 qt of atf in every oil change.
the oil filter you use also makes a difference, for all you fram users, good luck with your extended oil changes.
 
The Dodge gets a change every 7500. That's the severe duty schedule. The 'normal' schedule is every 15k. The Explorer gets changed every 5k-7500.
 
transman731 said:
i go 5000 on my vehicles, but i also run 1 qt of atf in every oil change.
the oil filter you use also makes a difference, for all you fram users, good luck with your extended oil changes.
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What is the story on using one 1 qt of ATF in the motor? Only person I've seen do that was John Thomas when we were on our way back from Atlanta in his Lincoln Town Car, and the low oil level light came on and all he had was ATF, LOL.

What filter do you recommend?
 
transman731 said:
i go 5000 on my vehicles, but i also run 1 qt of atf in every oil change.
the oil filter you use also makes a difference, for all you fram users, good luck with your extended oil changes.
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As drkelly said what is the deal with atf and what filter is the best. Is this in a gasser or diesel?
 
i prefer wix filters. i have seen 4-5 fram filters fail, that is 3-4 too many. every other oil change, i cut my filters open to see if anything is going on internally. i have cut more than a few frams open, only to see the filter media broken away from it's mating surface.

i use atf to keep things clean, the detergents in the atf clean up all the carbon and other deposits that tend to lay in places where the oil doesn't circulate.
as far as gas or diesel, i don't think atf would do any good in a diesel.
the atf is an old school thing, i know a lot of old timers that swear by it. i have done it on my personal vehicles for over 20 years, and never had any issues because of it. i can tell you that when i go to pull my intake off, it will be clean inside.
 
I have also been told the atf has seal conidtioners that help keep leaks down.

sent pony express
 
Decomp said:
bmw is once a year or 15000, good running machines, but they always sound like they're about to fall apart.
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That's because BMW's ARE about to fall apart. Personally, I think 15k is a bit much. Especially for the turbo cars, which they all are now. That oil comes out of there looking like black water. I run 10K on BMW oil in my Toyota with Toyota filters. The off road rig uses Toyota filters and conventional oil and is changed every so often. 3k is absolutely a WASTE of oil these days. For highway driving, I'd run 5-7k on conventional. City (which is most all I currently do) I'd run 5k.
 
I still change it every 3k in my truck, to me it's just nuts to go anything over 5k. It won't hurt a damn thing if you change it at 3 or 5k every time.
 
http://www.fleetfilter.com/comparison-wix-filter.html
From Seeing around 1500 oil filters a month for the last 15 years
I learn a few things fram oil filters are ok
Wix is good
pure one is good
Fram and purolator make filters for about 50 or so different companies , If you do like them you could be using one of there filters marketed under a different name
 
Most of the motorcraft filters are rebadged purolators. They're pretty well made inside, IME... at least the FL-1A and FL-820S. Frams are shit. Cardboard drainback valves, collapsed pleats, etc. I've got to take a screwdriver and gouge the drainback valve out of the Motorcraft filters to get the rest of the oil out of them.

Fords get Ford filters (cheaper that way) and the Dodge gets Fleetguard.
 
When yall are talking about frams are you talking about the regular frams or all of them (i.e. Tough and Extra Guard). I've retty much always used Frams and never had a single problem.
 
I used to service my truck every 10k. I figured with 15 quarts it would be ok. I haven't had any issues but I've heard it could cause injector issues so I switched to 5k. That's what I have always done on my gas engines.

Sent from my DROIDX using Tapatalk
 
transman731 said:
i use atf to keep things clean, the detergents in the atf clean up all the carbon and other deposits that tend to lay in places where the oil doesn't circulate.
as far as gas or diesel, i don't think atf would do any good in a diesel.
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Diesel engines will always be dirty inside, some more than others ( even of the same brand/make) the black you see in diesel oil is soot, the same stuff you see coming out the tail pipe, it gets in the oil thru blow by.

ALL diesel engines have blow by, some worse than others. YOu've all seen the tube hanging down under a road tractor that is puffing steam/smoke, that is blow by escaping the engine, this is the combustion pressures getting by the piston rings.
compression ratio of 17:1+ added pressure of turbo charged air raising compression ratio upwards of 23:1+, you are not going to keep it sealed well. new diesel engines with EGR and actual PVC systems are cleaner, but they still have the blow by, which is occurring before any of the emissions controls are encountered by the combustion stream, the soot is still in the engine, it's just not allowed to escape out the tail pipe anymore.

Gasoline engines suffer from the same, soot from combustion, they just aren't as sooty as diesel engines, any of you guys wheeling LP rigs notice the oil takes forever to get dirty ? No soot in Lp when it burns, but that doesn't mean the oil doesn't wear or breakdown over time.

As for using ATF, ya, it's old school, motor oil has come a long way the last 10-15 years, the detergent and additive packages in it do pretty well,

if you see an engine sludged or coked up these days, it either hasn't been maintained or it's not running the correct operating temp.
 
transman731 said:
i go 5000 on my vehicles, but i also run 1 qt of atf in every oil change.
Click to expand...

I know that the detergents in ATF clean the engine, but are you adding a full quart to the capacity or replacing a quart of oil? Any side effects or anything to be aware of during/after the oil change? Please explain further. Thanks.
 
bowtieman55 said:
I know that the detergents in ATF clean the engine, but are you adding a full quart to the capacity or replacing a quart of oil? Any side effects or anything to be aware of during/after the oil change? Please explain further. Thanks.
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i substitute one qt of atf for 1 qt of oil.
i have never had any side effects from doing it.
 
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