Why so short?

[02zx9r rev2]

I like changing oil and working on the cars, so I will probably stick with 5K ocis with PYB, which will be about 6 months for me. I could do 10K mile intervals, but I like changing my oil

 

[blupupher]

I agree with the GDI (especially turbo) requiring intervals in the 5,000 mile range. We are still seeing fuel dilution issues with them.

The 3,000 mile oil change interval is still stuck in many peoples heads, despite that having gone away years ago.
5,000 miles is a lot for them.

For me and my vehicles:

• Santa Fe - 5,000 miles since I am not quite severe duty all the time (3,750 mile interval per Hyundai), nor am I routine all the time (7,500 mile interval). 5,000 miles is my compromise mileage between the two and is easy to remember.
• Soul - 6 month change based on warranty reasons. Less the 3,000 miles.
• xB - 5,000 miles because it is easy to remember and takes over a year to get that many miles.
• Sisters Santa Fe - ~7,500 miles, she does mostly highway miles. Have done over 9,000 on it before.
• Brother in laws F150 - Every 6 months because the motor is dying (lots of metal bits in filter every change), anywhere from 2,500-4,000 miles
• My F150 - annual'ish change (list]

 

[4WD]

Well, I guess I am comfortable with between 5K to 7K oil change intervals, using synthetic oils.
If a vehicle is not driven much, 16 months is the limit.
I did cave to 2 OCIs for a filter. Kicking and screaming, of course.

The engines I service tend to run for a long time.
I service 3 Acura TSXs, with the mighty K24.
Wifey's 2006 with 200K does not burn a drop. It has lived on a steady diet of M1 5K OCIs. I never check the oil and under the valve cover it is spotless.
My sister's 2007 (80K on the clock) was serviced by quickie lubes, using semi syn based on the MM. It burns over a quart every 4K.
A friends 2007 (130K) goes thru about 1/2 quart every 5K. Serviced by the dealer based on MM.

Someone once mentioned a state law to use an oil filter for two OCI’s ?

 

[Tjbouwhu]

GDI...

 

[Saabist]

Why so short? Oil is cheap, engines are expensive.

 

[2EHA]

Why so short? Oil is cheap, engines are expensive.

where is the yawning emoji on here i can’t find it

 

[mahanddeem]

What is "short"? I don't see 4k miles "short" for an OCI

 

[Duffyjr]

OCI's matter.

 

[supton]

Someone once mentioned a state law to use an oil filter for two OCI’s ?

I think CA for their fleet vehicles does an filter per 2 OCI's. They did a study, someone posted that, and I don't remember beyond that.

But not a law, just their practice for their state fleet of vehicles.

 

[SeaJay]

Mine has a 7,500 OCI. I don't even start thinking about it until I hit 6,000 miles, then I figure I have some time to get it done at my convenience.

I did need to leave it at the shop recently for 4 tires and front brakes. I had about 5,000 mile, but had the shop take care of the oil change then rather than another visit later on

 

[4WD]

I think CA for their fleet vehicles does an filter per 2 OCI's. They did a study, someone posted that, and I don't remember beyond that.

But not a law, just their practice for their state fleet of vehicles.

Might have been BrocL … couple years back or more …

 

[supton]

Might have been BrocL … couple years back or more …

Him, or OneEyeJack.

 

[Starman2112]

Oil is cheap, engines are not. Why risk it?

 

[OilUzer]

I think CA for their fleet vehicles does an filter per 2 OCI's. They did a study, someone posted that, and I don't remember beyond that.

But not a law, just their practice for their state fleet of vehicles.

culturally speaking , California has many tribes ... Maybe they are into tribofilm

 

[4WD]

where is the yawning emoji on here i can’t find it

 

[gathermewool]

Don't forget the rash of timing chain and GM balancer chain failures. Micro particulates in the oil, combined with very low viscosity and long oil change intervals have resulted in a great many early chain failures. On certain Ford products, it's a $4000 job, it's completely preventable too.

Remember, due to excessive worn chain warranty claims, GM reprogrammed the OLM to never let the engine exceed 7500 miles on an oil change and depending on conditions, it could be as soon as 5000. It was previously 10,000 maximum. They also changed the oil specification to a more robust oil.

I will say it again, it's the low viscosity, coupled with extended drain intervals that result in rapid chain wear. People really don't want to believe that these ultra thin oils are sometimes not up to the task of lubricating 'certain' parts. Especially when contaminated with many thousands of miles of wear particulates coupled with fuel dilution. Even Mobil oil says "Mobil 1 oils are compatible with most fuels; however, excess fuel dilution may require more frequent changes and used oil analysis for quality monitoring"

Furthermore, low tension piston rings often are quite intolerant of any wear. Many Honda engines consumed oil well before their service life should have been used up. Cleaner oil can help here.

Chains? Is that some new tech, like DI?

 

[4WD]

culturally speaking , California has many tribes ... Maybe they are into tribofilm

Tribol leaders ?

 

[OilUzer]

Tribol leaders ?

Changing the filter every other time retains more of the old oil.

iirc, according to some experts it's not a bad idea and I think it helps when it comes to tribofilm or the ability to retain or build it quicker or something to that effect.

 

[4WD]

Changing the filter every other time retains more of the old oil.

iirc, according to some experts it's not a bad idea and I think it helps when it comes to tribofilm or the ability to retain or build it quicker or something to that effect.

Yeah … thought of that with my L83 spike plan. If oil gets diluted … nothing can fix it quicker than one fresh quart … and 7 older quarts remaining …

 

[kohnen]

My only car with a gas engine is a 2015 Chevy Volt. Typically, it only runs on the battery/electric side of the power train - we charge it every night. The engine is only used for longer distance trips (exceeding about 38 miles in a day). Effectively, the oil is only used during road trips.

The oil life monitor bases its remaining life on the running of the engine, and the time. You have to change oil at least once every 2 years.

Typically for me, I put 4-5k miles on the engine over the 2 year span, and I change the oil when the oil life monitor tells me to. My next change is due late 2022.

I use Mobil 1 oil (either Extended Performance, or Annual Protection). Both of those are Dexos 1 oils. I called GM and they say it's fine to leave ANY Dexos 1 oil in there for as long as the oil life monitor says, even if it's 2 years. I called Mobil 1 and they insisted that I change at least yearly.

I've had no problem with 2 year long intervals.