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Change oil filter, but not oil due to rate of consumption? #5232169 10/06/19 04:03 PM
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EchoThat300K Offline OP
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My 2002 Toyota Echo has almost 300k miles on it. I use about a quart of high mileage synthetic blend per month/1000 miles. After 5 months and 5000 miles, I only have a quart and a half of the original oil in the car. I keep adding new, clean oil each month.

Can I just change the filter instead of changing the oil and filter every 5000 miles? Maybe take the complete oil and filter change out to 10k miles, or once a year?


300k miles is a long way to drive to be basically in the same place that you started.
Re: Change oil filter, but not oil due to rate of consumption? [Re: EchoThat300K] #5232190 10/06/19 04:31 PM
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earlyre Offline
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extended life filter changed yearly sounds like a plan to me...

Last edited by earlyre; 10/06/19 04:33 PM.

Mine:
13 Ford C-MAX hybrid: Havoline syn 5w20,& Napa Gold 1348
Re: Change oil filter, but not oil due to rate of consumption? [Re: EchoThat300K] #5232205 10/06/19 04:49 PM
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fozzdesy2001 Offline
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I'm in the same boat as you with my beater Subie but can't help myself so I do 2 changes a year including a new filter each time. Guaranteed tp have good oil as long as it's topped up. Cheapest I can find works for me.


2001 Subaru Forester S
Replaced with a 2006 Forester

2004 Subaru Forester XT
Death by deer. Replaced with 2003 Impreza Outback Sport (beater)
Re: Change oil filter, but not oil due to rate of consumption? [Re: EchoThat300K] #5232217 10/06/19 05:01 PM
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Railrust Offline
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Honestly I think that at 300,000 miles you can do whatever you want, and I have certainly heard of people doing it if their cars are using that much oil and their mileage is that high.

Re: Change oil filter, but not oil due to rate of consumption? [Re: EchoThat300K] #5232221 10/06/19 05:04 PM
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EchoThat300K Offline OP
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Thanks.

I appreciate the advice.


300k miles is a long way to drive to be basically in the same place that you started.
Re: Change oil filter, but not oil due to rate of consumption? [Re: EchoThat300K] #5232226 10/06/19 05:19 PM
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danez_yoda Offline
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My wifes toyota sienna has 100k and uses no oil, manufacturer recommends 10k mile oci anyway. i do 5k because thats when the oil light comes on but sometimes i feel guilty draining out oil that looks that good and skip with no issue.

10k on an oem toyota filter is a no brainer. many of the cheapie filters ([censored] abd supertech) Re claiming 10kmile life.

i cant bring myself to leave a half qt of dirty oil in the engine when changing it so i dont reuse filters but if you are continuously adding oil then ok. change it every 10kmiles. you might just get a clean catch pan and pour the drained oil back in since it will be fairly new and refreshed.

Re: Change oil filter, but not oil due to rate of consumption? [Re: EchoThat300K] #5232227 10/06/19 05:19 PM
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JohnnyJohnson Offline
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I would get a Fram Ultra or a Mobil 1 filter and leave it on there a year I'd dump the oil twice a year. Probably to with
something like Havoline Pro DS 5w-30 in the box for $19.97 and have two quarts of left over oil to add as needed.

Last edited by JohnnyJohnson; 10/06/19 05:23 PM.

2004 Corolla 136159
Out: EDGE EP 5W-30 Bosch 3311 7156 Miles
In: Havoline Pro DS 10w-30 Purolator PureOne 3-14-19 129693
2006 Duramax 76552
Out: T6 5W-40 M1-303
In: T6 5W-40 XG9100 73705 4-22-18
Re: Change oil filter, but not oil due to rate of consumption? [Re: EchoThat300K] #5232372 10/06/19 08:03 PM
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paoester Online Content
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Filter once a year. Oil change every 2 years. That is a lot of addtives you are replacing.

Re: Change oil filter, but not oil due to rate of consumption? [Re: EchoThat300K] #5232381 10/06/19 08:09 PM
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CR94 Offline
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A little math will clearly answer this perennial question.


2011 Toyota Prius now at 104K
1981 Mazda GLC (323) retired at 606K
1972 Subaru DL retired at 190K
1954 Chevrolet retired at 121K
Re: Change oil filter, but not oil due to rate of consumption? [Re: EchoThat300K] #5232468 10/06/19 09:31 PM
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JLTD Offline
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Numerous threads on this over the years, backed up with some UOAs.

At that level of consumption, the consensus has been to change the filter at regular intervals and keep the oil level topped off. I'd grab a Fram Ultra and go 20,000 miles.

Another good use for the Havoline 6 quart box.


I use the overseas manual to choose my viscosity.

Using AMSOIL

Hers: 2008 Jeep Liberty 154k, SS 5w30/Amsoil

His: 2015 4Runner 60k, SS 5w20/Amsoil

Re: Change oil filter, but not oil due to rate of consumption? [Re: EchoThat300K] #5232751 10/07/19 09:18 AM
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Farnsworth Offline
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Have a compression check and other tests to try and determine what's the cause. In the old days engines were overhauled. Myself I would keep changing the oil and filter at the 5k interval, at the time when it is a bit down. You don't live in the arctic, try 30 good quality detergent oil, won't hurt it to try. Add a can of stp if the 30 doesn't help enough, if they still make it. My 2cents

Re: Change oil filter, but not oil due to rate of consumption? [Re: EchoThat300K] #5235866 10/10/19 12:29 PM
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DGXR Offline
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I agree with the suggestions to get an extended life oil filter and change just the filter every 12-15k miles. And while you are adding enough fresh oil to justify no longer draining the crankcase, ever... you still want to pull the plug periodically (maybe every every 2-3 years?) to to drain any sediment from the bottom of the pan.


1995 Corvette coupe LT1 6-speed
2006 Tacoma 2.7 Base SR5 AC
1999 Yamaha YZ400FL
2003 Honda XR400R
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