Extended OCI with Syn, on car with dino OLM

[max88]

2009 Honda Civic DX-G auto.
Owner's Manual specs dino. Oil change when OLM reaches 0% or 1 year has passed since last OC whichever comes first. Filter change every second OC.

Question for those who run extended OCI with synthetic on car with OLM calibrated to dino. What would you do when OLM reaches 0%? Ignore OLM warning/reminder and run twice the miles, or do something and what?

 

[NMBurb02]

In order to dial it in, you could go to 0%, reset the OLM, take it down to 30-40%, drain, and get a UOA to see if/how much you can extend it beyond that. My Burb does not display the % life remaining, just gives a notice when it is time, so when I did a run of PU, I just went 2x the OLM. I did not get a UOA because I went back to a semi-syn on the next run.

 

[HKPolice]

Not recommended for hondas. Despite what people keep saying, modern honda engines including the R18 in your civic are NOT easy on oil. There are plenty of synthetic R18 UOA that show 1-2 TBN after OLM reaches 0% which makes the oil unfit for service.

Maybe older honda H22/F22 engines were easier on oil, but modern R18 & K20/K24 engines wear down the TBN fast especially for severe service in Canada.

 

[NMBurb02]

Originally Posted By: HKPolice
Not recommended for hondas. Despite what people keep saying, modern honda engines including the R18 in your civic are NOT easy on oil. There are plenty of synthetic R18 UOA that show 1-2 TBN after OLM reaches 0% which makes the oil unfit for service.

Maybe older honda H22/F22 engines were easier on oil, but modern R18 & K20/K24 engines wear down the TBN fast especially for severe service in Canada.

So he should only run the OLM to 50% if using dino?

 

[MileHigh18]

I have an OLM and I never go buy it. Keeping track of your mileage IMO, is still the best way to go especially when the OLM doesn't account for the use of synthetic oil.

 

[navcanman]

What I do is run olm down to about 50 percent and then reset to 100 percent then change oil when according to the now reset olm it is time. No science to back it just seemed a reasonable work around

 

[artificialist]

When I had my Saturn ION, the OLM was based on conventional oil, but I used synthetic with the OLM schedule.

There is another problem when using the OLM for an extended period of time. Sometimes it records how much further you went past zero, and if a dealer saw that and saw an engine problem, they might try to void the warranty.

 

[max88]

Originally Posted By: NMBurb02
Originally Posted By: HKPolice
Not recommended for hondas. Despite what people keep saying, modern honda engines including the R18 in your civic are NOT easy on oil. There are plenty of synthetic R18 UOA that show 1-2 TBN after OLM reaches 0% which makes the oil unfit for service.

Maybe older honda H22/F22 engines were easier on oil, but modern R18 & K20/K24 engines wear down the TBN fast especially for severe service in Canada.

So he should only run the OLM to 50% if using dino?


It's hard for me to wrap my head around the idea that the newer Honda engines break down synthetic as quickly as dino. But anything is possible I guess.

My car's oil change had always been done by garage, with dino, twice a year (spring and fall to coincide with winter/all season tire change), regardless of OLM (which is always 30-50% at OC). Base on OLM, 8-9 month OCI is doable.

I started DIY in Nov 2013, with synthetic and long mileage filter, hoping I can push OCI to once a year, from twice a year. My only requirement is to change oil between April and November, not in colder months in Canada, aka the great white north. If not, I can time the OC to April->November->July/August->April->November->July/August.

 

[max88]

Originally Posted By: artificialist
When I had my Saturn ION, the OLM was based on conventional oil, but I used synthetic with the OLM schedule.

There is another problem when using the OLM for an extended period of time. Sometimes it records how much further you went past zero, and if a dealer saw that and saw an engine problem, they might try to void the warranty.


It's no longer under warranty, hence I am thinking of pushing beyond 0%.

 

[901Memphis]

It's true the R18 is a little rougher on lesser oils but synthetics hold up better. I would just use synthetic and change by 0%

Honda semi synthetic shot, but TGMO doing much better
https://bobistheoilguy.com/forums/ubbthreads.php?ubb=showflat&Number=3040183

Mobil 1 AFE good TBN but wear not excellent, still breaking in
https://bobistheoilguy.com/forums/ubbthreads.php?ubb=showflat&Number=2973985

 

[Durango]

Originally Posted By: max88
2009 Honda Civic DX-G auto.
Owner's Manual specs dino. Oil change when OLM reaches 0% or 1 year has passed since last OC whichever comes first. Filter change every second OC.

Question for those who run extended OCI with synthetic on car with OLM calibrated to dino. What would you do when OLM reaches 0%? Ignore OLM warning/reminder and run twice the miles, or do something and what?


max88,

I still use my OLM using synthetic oil of my choosing. For sure I take my cars in every 6 months for other maintenance duties. Currently my OLM tells me to change my oil every 6K which amounts to 6 months anyway.

Personally I don't like extended OCI's cuz too many miles on any oil synthetic/dino spells engine flush! That's what Toyota does as part of there maintenance when they change oil in their extended oil schedule. Besides that who knows if the oil filter can do those miles anyway.

Durango