I use amsoil oil and i'm assuming that the oil will outlast the filter so how long can i leave the filter on before i change it? I don't put many miles on my car here in chcago so will the filter last 6 months?
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how long does an oil filter last??
- Thread starter trey
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"6 months or 12,500 miles, whichever comes first."
I have gone up to 1 yr using the Amsoil oil filters. I only log about 10,000 miles a year these days.
Just keep an eye on the oil, if the oil looks clean etc, you engine is running very efficient and the filter is more than likely still in good shape. This has been the case with my vehicles over the last 25 yrs of using Amsoil, my 2001 GMC truck has about 8,000 miles (5 winter months) on my oil and filter, checked it yesterday and the oil looks like the day I put it in, very clean. You would suspect I just changed my oil if you were to observe it. Granted many vehicles don't operate like this and thats why paying close attention to the looks of the oil can give you a good idea of contamination.
A trick I learned is called the blotter test. With a warm engine, remove the dipstick and let a drop (1) of oil drip onto a white business card. Let it sit for day and then look at it. Dirty carboned up oil with leave a halo affect, canter with be dark with the outside clear. Thats an good indication you oil is contaminated with carbon and should be changed ASAP. If the stain is clear thru-out, you engine is running in great shape. I do this every couple of months and have yet to find any carbon in my GMC's engine oil. That could be an indication of a good running engine or a good oil filter. NOTE-Good air filters are also important to keeping the oil clean, if dirty air is getting ingested it will lead to increased engine wear and reduced oil longevity. If you were to do nothing else to a vehicle, using top quality air and oil filters (not buying on price alone) would be the most important IMO.
[ February 18, 2004, 08:49 AM: Message edited by: Mike ]
Just keep an eye on the oil, if the oil looks clean etc, you engine is running very efficient and the filter is more than likely still in good shape. This has been the case with my vehicles over the last 25 yrs of using Amsoil, my 2001 GMC truck has about 8,000 miles (5 winter months) on my oil and filter, checked it yesterday and the oil looks like the day I put it in, very clean. You would suspect I just changed my oil if you were to observe it. Granted many vehicles don't operate like this and thats why paying close attention to the looks of the oil can give you a good idea of contamination.
A trick I learned is called the blotter test. With a warm engine, remove the dipstick and let a drop (1) of oil drip onto a white business card. Let it sit for day and then look at it. Dirty carboned up oil with leave a halo affect, canter with be dark with the outside clear. Thats an good indication you oil is contaminated with carbon and should be changed ASAP. If the stain is clear thru-out, you engine is running in great shape. I do this every couple of months and have yet to find any carbon in my GMC's engine oil. That could be an indication of a good running engine or a good oil filter. NOTE-Good air filters are also important to keeping the oil clean, if dirty air is getting ingested it will lead to increased engine wear and reduced oil longevity. If you were to do nothing else to a vehicle, using top quality air and oil filters (not buying on price alone) would be the most important IMO.
[ February 18, 2004, 08:49 AM: Message edited by: Mike ]
I use oversized Amsoil filters on my '95 Tacoma and '90 Audi 100 and run them for 12,000 miles or one year. However, on both these engines the filter mounts vertically, with the open end up.
The concern I would have about doing this in some applications - where the filter mounts horizontally or is angled down - is that the elastomer used for the anti drainback flap will slowly degrade when exposed to gas/diesel fuel, as well as the combustion byproducts in used engine oil. If you start to notice valve lifter noise on cold starts, it's time to change a horizontally mounted oil filter, regardless of how long it's been installed.
I'm not convinced the silicone ADBV's are any more durable than those made of elastomeric materials. The long life, 30,000 km/2 yr, MANN oil filters for my 2002 Audi TT use the elastomeric type ADBV and not the silicone type.
Tooslick
www.lubedealer.com/Dixie_Synthetics
The concern I would have about doing this in some applications - where the filter mounts horizontally or is angled down - is that the elastomer used for the anti drainback flap will slowly degrade when exposed to gas/diesel fuel, as well as the combustion byproducts in used engine oil. If you start to notice valve lifter noise on cold starts, it's time to change a horizontally mounted oil filter, regardless of how long it's been installed.
I'm not convinced the silicone ADBV's are any more durable than those made of elastomeric materials. The long life, 30,000 km/2 yr, MANN oil filters for my 2002 Audi TT use the elastomeric type ADBV and not the silicone type.
Tooslick
www.lubedealer.com/Dixie_Synthetics
most any filter should make it to 10K.
alot of asian cars spec oil filter changes every 15,000 miles.
alot of asian cars spec oil filter changes every 15,000 miles.
Nitrile ("Neoprene") is generally quite resistant to solvents, and the "BN P" Series is particularly solvent resistant. I suspect the latter is commonly used for oil filter mounting gaskets and ADB annular flappers.quote:
Originally posted by TooSlick:
...the elastomer used for the anti drainback flap will slowly degrade when exposed to gas/diesel fuel, as well as the combustion byproducts in used engine oil...
I also have one car that I leave the filter on for a year, low mileage, vertical mount, another for 12,000 miles regardless of time and a third 7500 miles regardless of time (about 9 months now)
Other then the drain back seal, which I am convinced does not hold oil indefinitely anyway, (Probably not even 24 hours when new) they can go 12,000 miles easily, In fact, the filter on the 12,000 mile one looked fine inside after cutting it open and the UOA was also fine, in fact better then when I changed the filter at 6000 miles. As I have stated mnay times in this board, IMO spin on full flow filters are a useless appendage on todays engines with todays oils!
Other then the drain back seal, which I am convinced does not hold oil indefinitely anyway, (Probably not even 24 hours when new) they can go 12,000 miles easily, In fact, the filter on the 12,000 mile one looked fine inside after cutting it open and the UOA was also fine, in fact better then when I changed the filter at 6000 miles. As I have stated mnay times in this board, IMO spin on full flow filters are a useless appendage on todays engines with todays oils!
trey
Thread starter
ok looks like i'm going 6 months, with my mobil 1 M!-105 oversized filter.
I have a failed filter on my site. I don't know the actual mileage on this filter, but I don't think it was alot.
http://www.lesabret.com/filters/filter.html
-T
http://www.lesabret.com/filters/filter.html
-T
For ANY name brand filter to somehow clog or otherwise fail in 6 months would take either a filter, engine, or oil failure of some sort, or require some truly extensive driving or nasty Severe Service situation. All filters are designed to last AT LEAST the 7,500 mi drains commonly stipulated in owner's manuals these days.
You say "you don't put many miles on your car," and if so, you could theoretically go a year or two (or even longer??) before full filter clogging, assuming no Severe Service, so 6 months is a piece of cake. (I'm not suggesting anyone go "1+ years" without changing filters since doing so would be neglect, pure-and-simple. I'm just saying it could literally take that long to clog a filter in some infrequently driven vehicles.)
You say "you don't put many miles on your car," and if so, you could theoretically go a year or two (or even longer??) before full filter clogging, assuming no Severe Service, so 6 months is a piece of cake. (I'm not suggesting anyone go "1+ years" without changing filters since doing so would be neglect, pure-and-simple. I'm just saying it could literally take that long to clog a filter in some infrequently driven vehicles.)
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