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OT mechanics how long does synthetic oil last
Posted on 6/27/15 at 9:35 am
Posted on 6/27/15 at 9:35 am
I just got my oil changed at a new place and paid for the top of the line synthetic oil...when its done the dude says see you in 15k miles...wtf? Seriously? V8 f150
17
Posted on 6/27/15 at 9:38 am to mpar98
quote:
hen its done the dude says see you in 15k miles...wtf? Seriously? V8 f150
Seriously.
I change mine around every 10K miles, but I've gone to 15 before.
And why the hell dont you change your own damn oil? Its not that hard.
Posted on 6/27/15 at 9:38 am to mpar98
I don't know the figures, but the only real benefit in synthetic oil is that it doesn't oxodize as fast as traditional oils. I wouldn't hesitate to go into the 10K or 15K mile range between oils with synthetic.
the only issue is that you will still need to change the filter at the manufacturer's recommended interval...
the only issue is that you will still need to change the filter at the manufacturer's recommended interval...
Posted on 6/27/15 at 9:43 am to elprez00
I live next to a firestone. It's $24. I'm lazy.
Posted on 6/27/15 at 9:45 am to mpar98
I have a sports car that's supposed to be changed every 3,000, but I have it changed every 5,000 since I use synthetic and have for many years. I was told by a helicopter mechanic I once dated that it's really clean, so I'm sure it would do fine to 10,000 too. I read online that some say it can last as long as 15,000 to one year though. He said it's like the blood in your body to a car/helicopter, so it should be used instead of other oils to keep a healthy engine even though it costs more. And...Good Morning!
This post was edited on 6/27/15 at 9:47 am
Posted on 6/27/15 at 9:56 am to BRgetthenet
It depends on the engine, but synthetics don't break down nearly as fast. 10-15k is not unheard of, but you'll have to do a filter change and top off during that run.
If you actually want to know, check out Blackstone Labs and have a used oil analysis done. They will scientifically tell you whether you can extend your OCI and if it's safe for YOUR vehicle and driving environment. I've had several done and verified my OCI was suitable for me.
You can also visit Bobistheoilguy and check out other UOA's for your vehicle to get an idea of what to expect.
If you actually want to know, check out Blackstone Labs and have a used oil analysis done. They will scientifically tell you whether you can extend your OCI and if it's safe for YOUR vehicle and driving environment. I've had several done and verified my OCI was suitable for me.
You can also visit Bobistheoilguy and check out other UOA's for your vehicle to get an idea of what to expect.
Posted on 6/27/15 at 9:59 am to mpar98
Like others have mentioned it could go 15k. But you may have to change your filter depending on what filter they put on it. Some filters are made for extended Oil change intervals while others are made just to go 3k-5k.
If you want to keep the oil in there for 15k I would change the filter to a napa gold filter at 7.5k and top it off with fresh synthetic.
If you want to keep the oil in there for 15k I would change the filter to a napa gold filter at 7.5k and top it off with fresh synthetic.
Posted on 6/27/15 at 10:14 am to elprez00
quote:
And why the hell dont you change your own damn oil? Its not that hard.
Because that shite is messy to frick with Mr doityourselffrickingselfeinstein. Unless he is going to drain the old oil into crawfish holes in his yard it ain't worth the headache.
This post was edited on 6/27/15 at 10:15 am
Posted on 6/27/15 at 10:18 am to Flashback
What year is your f150. I have the 5.0 and it's every 10k miles. I would just follow what the factory says.
Posted on 6/27/15 at 10:37 am to mpar98
Check your manual. Look at driving conditions. Oil life mainly depends on driving conditions. Do a lot of short day to day driving and or on dusty roads? Use the harsh condition guidelines.
Oil does more than lubricate. It suspends contaminants. If the oil becomes saturated, it can no longer adequately prevent engine wear. I think it's nuts to go longer than 5000 miles.
Toyota went to 10,000 miles on suggested oil changes on my Tundra with synthetic. Because sludge developed in the engine, they changed the oil viscosity from 5w-30 to 0w-20. What does that tell you? The are trying to increase the life of the oil by thinning it. What does that do to your engine? It can't be good.
Car companies are in the business to sell cars. So, it behooves them for you to wear your engine out by extending oil changes.
Again, I don't recommend going longer than 5000 for any reason. And If I did a lot of short city driving, I might even change it every 3,000.
Oil does more than lubricate. It suspends contaminants. If the oil becomes saturated, it can no longer adequately prevent engine wear. I think it's nuts to go longer than 5000 miles.
Toyota went to 10,000 miles on suggested oil changes on my Tundra with synthetic. Because sludge developed in the engine, they changed the oil viscosity from 5w-30 to 0w-20. What does that tell you? The are trying to increase the life of the oil by thinning it. What does that do to your engine? It can't be good.
Car companies are in the business to sell cars. So, it behooves them for you to wear your engine out by extending oil changes.
Again, I don't recommend going longer than 5000 for any reason. And If I did a lot of short city driving, I might even change it every 3,000.
Posted on 6/27/15 at 10:51 am to Enadious
I use synthetic and change it every 6000 miles. Same mileage I use to rotate tires. Makes it easy to remember.
Posted on 6/27/15 at 11:03 am to mpar98
I change mine every 9k, and change the filter every 3k. When I change the filter, I pour in an extra quart.
Posted on 6/27/15 at 11:11 am to BRgetthenet
Yep. Ex-Marine...
Posted on 6/27/15 at 12:33 pm to elprez00
I don't change my own oil, and I do everything else my truck needs done. Putting a fan clutch in after I eat lunch.
It takes 10 minutes and costs me $10 more to have it done somewhere, and I flat out don't feel like fricking with it every couple of months. That's called being smart
Eta: If you really want to extend it, get an Amsoil bypass system and run their oil. You should be able to go to 25k under normal conditions
It takes 10 minutes and costs me $10 more to have it done somewhere, and I flat out don't feel like fricking with it every couple of months. That's called being smart
Eta: If you really want to extend it, get an Amsoil bypass system and run their oil. You should be able to go to 25k under normal conditions
This post was edited on 6/27/15 at 12:37 pm
Posted on 6/27/15 at 12:35 pm to elprez00
quote:
And why the hell dont you change your own damn oil? Its not that hard.
Pretty sure most people don't change their own oil
Posted on 6/27/15 at 12:38 pm to mpar98
funny thing amsoil used to advertise 25k on the oil
I believe that is still the case.....but that limits the profits for corporations
I use a pure one filter....best paper filter on the market....change the filter a cpl times prior to changing the oil
but whatever happens to work for you....
I believe that is still the case.....but that limits the profits for corporations
I use a pure one filter....best paper filter on the market....change the filter a cpl times prior to changing the oil
but whatever happens to work for you....
Posted on 6/27/15 at 12:48 pm to Enadious
I thought car companies recommended changing oil every 10k-15k miles because they started including oil changes in the free maintenance for first so many miles.
Posted on 6/27/15 at 12:51 pm to mpar98
quote:
I just got my oil changed at a new place and paid for the top of the line synthetic oil...when its done the dude says see you in 15k miles...wtf? Seriously? V8 f150
Pretty easy to pull the stick and look at the oil and smell it. Honey gold is good to go, darker and burnt smelling is time to change in that engine.
Posted on 6/27/15 at 2:11 pm to mpar98
No one in this thread knows their arse from their elbow, when it comes to oils.
Used oil analysis is really the only guide to the true condition of used oil and its' remaining life left. The color of oil has nothing to do with the effective life of an oil, the smell of oil has nothing to do with the amount of life left. So much misinformation in this thread.
The key to extending oil changes is to keep insolubles low/eliminated, therefore maintaining a high TBN within the oil and also a low TAN number.
I run bypass filtration, in addition to the regular full flow (spin on filter) filter. I also take samples and send them off for UOA's, which measures wear metals, and TBN (remaining life) of the oil in my crankcase.
At my last sample, with 12,767 miles on my oil, my oil (verified by particle count) was said to "look as clean or cleaner than new oil out of the bottle." Once again, keeping the oil clean is the key. By clean, I'm not referring to black oil, honey colored oil, etc. Oil can be black, and be clean. If an oil is black, that means it's doing it's job by keeping the combustion process and ingress in suspension.
Bob is the Oil Guy Forums
Used oil analysis is really the only guide to the true condition of used oil and its' remaining life left. The color of oil has nothing to do with the effective life of an oil, the smell of oil has nothing to do with the amount of life left. So much misinformation in this thread.
The key to extending oil changes is to keep insolubles low/eliminated, therefore maintaining a high TBN within the oil and also a low TAN number.
I run bypass filtration, in addition to the regular full flow (spin on filter) filter. I also take samples and send them off for UOA's, which measures wear metals, and TBN (remaining life) of the oil in my crankcase.
At my last sample, with 12,767 miles on my oil, my oil (verified by particle count) was said to "look as clean or cleaner than new oil out of the bottle." Once again, keeping the oil clean is the key. By clean, I'm not referring to black oil, honey colored oil, etc. Oil can be black, and be clean. If an oil is black, that means it's doing it's job by keeping the combustion process and ingress in suspension.
Bob is the Oil Guy Forums
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