i'm switching to synthetic oil in my jeep (4.0L six) and want to do 7500 to 10k mile oil changes. I've been happy with the napa gold 1085 so far, and have heard a lot of good about the napa gold/wix in general, but is it up to this long of a a change interval? would it be worth going to a Mobil 1 or something more expensive?
extended drain on wix/napa gold?
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See 3MPs study @ http://neptune.spacebears.com/cars/stories/oil-life.html
He uses both Mobil 1 and Napa Gold filters.
Hey this was my 200th post!
He uses both Mobil 1 and Napa Gold filters.
Hey this was my 200th post!
I recently completed a 15K run with Wix filters on my car, & chickened out & changed the filter at ~9K miles. If I had it to do over again, I'd just run the same filter for the whole interval. My guess is that the Wix/Napa gold oil filters should do just fine for intervals of 7-10 K miles.
Awesome link GSV. I intend to watch and learn more.
Just read the link. Interesting that on the cover sheet they talk about changing the oil filter when insolubles reach 0.5%. In fact, they changed the filter at 12k miles with insolubles at 0.4% and there was no change in the insolubles!
One wonders, what, if anything, is the oil filter accomplishing?
Almost always the key consideration in regards to oil and filter changes is the cost of the components. However, I consider my free time to be somewhat valuable and changing the filter on my two Mazdas and Honda Accord is a real pain (I've got to remove the passenger wheel on my Miata).
On the other hand, jacking up one side with my hydraulic floor jack and uni-body adapter is a snap for access to the oil pan bolt. In short, oil changes are nothing compared to the hassle of the filter.
I'd like to know for certain exactly what an oil filter filters in a broken in, well maintained car
After reading the link I am really tempted to go to twice a year oil changes (Mobil 1 5W30 Winter, 10W30 Summer with about 15k miles/year on a vehicle) and once a year oil filter changes.
I wish they had tested the delta P and torn down that oil filter which went to 12k miles and analyzed it!
[ November 29, 2003, 10:08 PM: Message edited by: ex_MGB ]
One wonders, what, if anything, is the oil filter accomplishing?
Almost always the key consideration in regards to oil and filter changes is the cost of the components. However, I consider my free time to be somewhat valuable and changing the filter on my two Mazdas and Honda Accord is a real pain (I've got to remove the passenger wheel on my Miata).
On the other hand, jacking up one side with my hydraulic floor jack and uni-body adapter is a snap for access to the oil pan bolt. In short, oil changes are nothing compared to the hassle of the filter.
I'd like to know for certain exactly what an oil filter filters in a broken in, well maintained car
After reading the link I am really tempted to go to twice a year oil changes (Mobil 1 5W30 Winter, 10W30 Summer with about 15k miles/year on a vehicle) and once a year oil filter changes.
I wish they had tested the delta P and torn down that oil filter which went to 12k miles and analyzed it!
[ November 29, 2003, 10:08 PM: Message edited by: ex_MGB ]
I have run Napa Gold filters for many years and I don't believe I would run any filter 10,000-15,000 miles. Just my two cents.
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I ran Napa Gold (dual 2 quart 1794) on my 4.0 jeep. My oil (Mobil 1) was all but shot @ 9k miles WITH an intermediate filter(s) change and make up oil, or so the UAO indicated (TBN of 2.5) My capacity was 9+ quarts. I was rather dismayed. I'm beginning to wonder if my high volume oil pump has something to do with it (although I can't see why). I swapped out the OEM pump because I didn't like the 13 psi warm idle readings.
I just did a oil and filter change with no intermediate filter changes and no make up oil for 10k. This was to test the alleged robust additives in Delvac 1. I'll be submitting a sample for UAO as soon as I find the little mailing tube.
I am now using Delvac 1 and have swapped my dual Napa Golds for the Amsoil fullflow/bypass setup. Delvac is still in use pending the UAO.
btw- my original 9-10k (I wasn't anal about the mileage then) UAO only showed high iron and lead. My somewhere around 10k UAO with NAPA GOLD and MOBIL1
I just did a oil and filter change with no intermediate filter changes and no make up oil for 10k. This was to test the alleged robust additives in Delvac 1. I'll be submitting a sample for UAO as soon as I find the little mailing tube.
I am now using Delvac 1 and have swapped my dual Napa Golds for the Amsoil fullflow/bypass setup. Delvac is still in use pending the UAO.
btw- my original 9-10k (I wasn't anal about the mileage then) UAO only showed high iron and lead. My somewhere around 10k UAO with NAPA GOLD and MOBIL1
Gary,
Am I mistaken or did you change out one of your two full flow filters for an Amsoil bypass filter (BE110) on this vehicle? If so, what effect did the changeout have on your oil analysis results?
Didn't you also need to change the remote filter mounting assembly to accomodate the bypass filter?
I think you definitely made the correct move in changing your oil pump over to a heavy duty model and agree with your flow comments. Your "new" oil pressures look much better.
Steve
Am I mistaken or did you change out one of your two full flow filters for an Amsoil bypass filter (BE110) on this vehicle? If so, what effect did the changeout have on your oil analysis results?
Didn't you also need to change the remote filter mounting assembly to accomodate the bypass filter?
I think you definitely made the correct move in changing your oil pump over to a heavy duty model and agree with your flow comments. Your "new" oil pressures look much better.
Steve
It it will go to 10K, unless the oil is in fine shape and has room for more miles a (5-7K+++) if it were me, I'd change in the middle. If the oil is holding well, yeah, you can get away with going to 10K but the oil had better be in good shape IMO.
Running the oil and the filter to it's limits on every change is IMO asking for something to happen. Always have reserves, you want a buffer, even if it is created by you. I see nothimng wrong in HELPING the oil last longer by changing the filter.
No problem. Any name brand, aftermarket OEM-equivalent filter by definition is designed to last at least 7,500 miles since that is the defacto standard starting with API "SL" oils.
defacto standard? i dont know what you drive but my 96 mazda says to change the filter every 15,000. same interval as a 98 civic has too, and a crv!
so what kind of cars are people driving that are rated for SL and require 7500?
so what kind of cars are people driving that are rated for SL and require 7500?
My own testing reveals that it makes no difference if you change the filter half way through an OCI and IMO in a well operating engine with a quality oil the filters really filter nothing of value. I have three concurrent OCI of about 11,12,000 miles (same engine) one with a filter at 6000 miles, one with a no filter change but a quart drain and replace at 6000 miles and the last one no filter change and no replenishment except to keep the dipstick full.quote:
Originally posted by ex_MGB:
One wonders, what, if anything, is the oil filter accomplishing?
I'd like to know for certain exactly what an oil filter filters in a broken in, well maintained car
After reading the link I am really tempted to go to twice a year oil changes (Mobil 1 5W30 Winter, 10W30 Summer with about 15k miles/year on a vehicle) and once a year oil filter changes.
Results, the last UOA was actually the best. Granted, engine had 52,000 miles on last one so breaking in may have been a factor (very slight though I would think, 28,000, 40,000, 52,000) but nothing else in the UOA reflected the need to change the filter during the interval. So, I am going with one filter for the entire OCI in the future. No one has proven you get more engine longevity with a filter change in a real world test.
Cryptokid: Actually, oil change schedules for new cars run the gamut, but 7,500 mile frequencies are quite common right now. Just a few examples include some/many Chrysler products, GM pickups, Nissan light trucks, some GM cars, etc. Since SL came out around 2001, none of this would apply to your first two cars mentioned. "...The GF-3 (SL) standard is expected to extend oil change intervals, with the 7500-mile interval being the minimum duty cycle..."
http://216.239.57.104/search?q=cach...i+sl+oil+change+interval+7,500&hl=en&ie=UTF-8
http://216.239.57.104/search?q=cach...i+sl+oil+change+interval+7,500&hl=en&ie=UTF-8
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