How long can I safely run this oil/filter combo?

Messages
562
Location
KY, USA
I've got a '97 Ford I bought new in Feb. '98. This is technically a 24 year old car with 41K miles. I do 5K mile OCI's on conventional oil (Exxon Superflo) regardless of elapsed time. Hasn't seemed to have any negative effects on it. The oil I'm using in it is oil I had in my garage when I bought the car new. What's the difference in it sitting in the oil pan or in plastic bottles on a shelf in the garage? Years ago on an old oil burner/leaker I had I started pouring oil from my other cars in it as topping off oil. When I sold the car it had been 31K miles without an oil change. There was no knocking in the engine and the guy that bought it drove it another year or two after buying it from me and only scrapped it because it wouldn't pass emissions testing.
 

hate2work

Thread starter
Messages
4,627
Location
Western Washington
You could easily go two years IF you get the engine nice and warm when you drive it. No starting the truck to just move it a few feet when it's cold. This type of thing drives water vapor and fuel into the oil. If you are just doing only put-put trips, go a year and get the oil analyzed at 12-15 months.

You live in W WA and you aren't buying oil from me?:)
OK that's what I was thinking as well.

I'm surprised that I haven't heard from someone who's done this, last time I was active in here there were all kinds of experiments going on LOL

There's a dealer just a couple miles from me, and she's cute, so yeah 😂
 
Messages
25
I run 25 on a couple with dinosaur. 2 of them at 5 years and oil looks like it was put in last week on 1. The cars will be scrap before it's a thing with the engine.
 
Messages
1,852
Location
Laramie, WY
Read again. Amsoil says 25k miles or one year.
On a side note, I change my F150 oil and filter every 2 or 3 years on SuperTech Synthetic.
I agree, I don’t consider time a factor in my maintenance, I don’t want to waste resources, I’m doing 10K OCI on 2GR-FE which is what the manufacturer spec’d with 2-3 oil changes on the same fram ultra, I’m using extended performance oils that are now up to 20,000 miles but I will only extend my OCI when I get around to doing UOA

I’m currently living in a small college town so everything is 1-5 miles away with only 30 mph speeds and extreme cold start up, even in the summer it’s 30-35F in the mornings

Or because nothing is close by, if we need anything else, I’m driving 75-150 miles minimum one way at 82-85 mph

super short trips or super long trips on the highway.

I’m basing this on UOAs on the 2GR-FEs I have seen here with some even more severe duty doing 10K OCI on SuperTech Full Synthetic.

it all depends on the engine, is your engine a problematic engine? have you seen any UOA on that engine and how is the maintenance history? If everything is kept up to date, then get an oil extractor and do UOA until you can get a fair understanding on how the oil is performing on your engine with your driving habits and you will know how long you can maybe run the oil.

skip the Amsoil, cost doesn’t make sense to me, there are many capable 20,000 mile oils that can be had on sale for very cheap, even the Advanced SuperTech now is rated at 20,000 miles ($16.xx) just do a UOA and see how everything is to know if you could go multiple years on the oil of your choice
 
Messages
2,417
Location
South Carolina
I've owned and maintained the F150 for 2/3's of it's life and I bought it from a friend that was meticulous about maintenance. I'm coming up to two years in May since it's last OCI. That will be 2 years and 800 miles (mostly highway). I'm thinking going another year without concern.
 
Messages
3,007
Location
Northeast
Seen factory oil and filter go for 33,000 miles . This was for an '88 Ford Festiva . Engine was a 1.3 ltr. from the Mazda 121 . Car was used for food delivery . I was asked to check the oil and was down close to 2 quarts . They started getting oil changes after that and went well over 110,000 miles . Amazing little engine . So , you'd think AMSOIL true synthetic could go up to 25,000 miles along with 20,000 mile oil filter .
 
Last edited:
Messages
25
Of course they recommend a year. Its not a must... The oil doesn't have feelings or know if its been in there 20 days or 20 months. They sell 5x as much in 5 years if you change it. No skin off their tail to recommend that,
 
Messages
10,910
Location
Cincinnati, OH, USA
Biggest issue will be how you drive it-if you roll down the highway for 50 miles at a time, it could probably handle 25K with Amsoil, M1 EP/AP, and a full synthetic media filter. If you only drive 1/2 a mile to somewhere & back, 3000 miles might be too long! Oil analysis is your friend-it will tell you (as it did me) whether your oil choice & usage is good enough or not.
 
Messages
230
Location
Louisiana
Run a good quality oil and filter and sleep well . Most of the recommendations you see are pure marketing . That Toyota 4cyl will run forever if you don't abuse it .
 
Messages
1,002
Location
montreal ,canada
I've got a 2006 Tacoma with the 4 cyl engine, 156K miles, not burning oil and no other known issues. I've always changed the oil and filter every 5K miles, sometimes using conventional and sometimes running whatever syn was on sale.

I'm retired now and don't enjoy getting under the truck like I used to, nor do I put as many miles on it every year, now driving about 4 - 5K per year.

Most of my trips now are short trips across town, but once a week I drive 20 miles round trip on the freeway. And 2 or 3 times a year I'll take this rig on a longer freeway drive.

My question- Can I run a premium oil and filter for an extended period of time, I mean several years? Considering Amsoil ASL and the Amsoil filter, as I'm told by my local dealer that combo is good for 25K miles.
That combo you're running should not be used for 25k in your case, not even close. That dealer doesn't have a clue nor does he seem to care. If he did then he wouldn't have told you such nonsense. I like and also use Amsoil but I would never use it as he suggested in your scenario.
 
Messages
27,891
Location
PNW
I go 2 years or 5,000 miles, but the vehicle I do that on never gets short tripped and the oil always gets to full operating temperature for most of the drive. That's the key IMO when going longer than the 1 year max recommendation, which probably factors in lots of short trips. If you did 1 or 2 short trips out of 10, but did a long trip the next time, the other 9 or 10 longer trips will still take care of it.
 
Messages
1,160
Location
United States
That combo you're running should not be used for 25k in your case, not even close. That dealer doesn't have a clue nor does he seem to care. If he did then he wouldn't have told you such nonsense. I like and also use Amsoil but I would never use it as he suggested in your scenario.
“i like the brand that has promoted extended ocis for literally decades but i would never ever use their products as intended”
 
Messages
425
Location
Kansas
I've got a 2006 Tacoma with the 4 cyl engine, 156K miles, not burning oil and no other known issues. I've always changed the oil and filter every 5K miles, sometimes using conventional and sometimes running whatever syn was on sale.

I'm retired now and don't enjoy getting under the truck like I used to, nor do I put as many miles on it every year, now driving about 4 - 5K per year.

Most of my trips now are short trips across town, but once a week I drive 20 miles round trip on the freeway. And 2 or 3 times a year I'll take this rig on a longer freeway drive.

My question- Can I run a premium oil and filter for an extended period of time, I mean several years? Considering Amsoil ASL and the Amsoil filter, as I'm told by my local dealer that combo is good for 25K miles...
IMO, the short tripping is severe duty and it is even more important for a OCI of 5k or 1 yr; which ever is first. I would switch to a synthetic; even an inexpensive one like ST or Havoline ProDS.
 
Why would you possibly want to risk any known or unknown consequences of not changing your oil on regular time frame or at least on the high end of time change. I have seen engines that did not get regular changes when i worked at Ford. Oil ages evan in a sealed container. Therefore more so when put in service. The price of an oil change versus the potential price of a new engine.... Sorry no bet. You want it to last do the regular maintenance. If your not able and don't have some extened family friends, neighbor. Then you may have to bite the bullet and find some shop you trust.
 
Top