How much would oil capacity affect OCI?
- Thread starter Gebo
- Start date
- Status
More oil capacity usually means a longer OCI can be achieved. More additives,detergents,etc to keeps things going longer.
So my civic with a 3.7qt sump has a 10k OCI... why? The engine is easy on oil?
overthinking, the sump size is all part of the designed oiling system and most certainly taken into consideration when they specify your oci in the owners manual.
Originally Posted By: randomhero439
So my civic with a 3.7qt sump has a 10k OCI... why? The engine is easy on oil?
Have you ever done a UOA at 10K? that would tell you.
So my civic with a 3.7qt sump has a 10k OCI... why? The engine is easy on oil?
Have you ever done a UOA at 10K? that would tell you.
Oil capacity has a huge affect on the OCI. The less oil you have, the harder it's gotta work.
This can work both ways! The smaller capacity will allow oil to heat up faster and have less moisture in winter conditions.
Originally Posted By: mechtech2
This can work both ways! The smaller capacity will allow oil to heat up faster and have less moisture in winter conditions.
So diesels have big sumps because????
This can work both ways! The smaller capacity will allow oil to heat up faster and have less moisture in winter conditions.
So diesels have big sumps because????
Originally Posted By: HerrStig
Originally Posted By: mechtech2
This can work both ways! The smaller capacity will allow oil to heat up faster and have less moisture in winter conditions.
So diesels have big sumps because????
There is a severe service interval for cars driven short distances because...
Originally Posted By: mechtech2
This can work both ways! The smaller capacity will allow oil to heat up faster and have less moisture in winter conditions.
So diesels have big sumps because????
There is a severe service interval for cars driven short distances because...
Last edited:
Originally Posted By: Gebo
One of my engines holds 6 qts. Another holds 3.5 qts. Am I overthinking or should I change the smaller capacity engine oil more often?
I think they should all be the same regardless of capacity, unless you install a larger or smaller oil pan then what came with the vehicle. A smaller engine has less surface area to wear, so it needs less oil. A larger engine has more wear area, so it needs a larger capacity. smaller engines also produce less acid than larger engines because they burn less fuel. That is if the engine is functioning properly. The engineers have already figured everything out for you.
One of my engines holds 6 qts. Another holds 3.5 qts. Am I overthinking or should I change the smaller capacity engine oil more often?
I think they should all be the same regardless of capacity, unless you install a larger or smaller oil pan then what came with the vehicle. A smaller engine has less surface area to wear, so it needs less oil. A larger engine has more wear area, so it needs a larger capacity. smaller engines also produce less acid than larger engines because they burn less fuel. That is if the engine is functioning properly. The engineers have already figured everything out for you.
Last edited:
you can make a good case both ways, too little - oil is working too hard, too much - oil never gets hot.
Last edited:
Hi,
HerrStig - Industrial diesel engines have large sumps for a number of reasons. Prime amongst these is the actuial design of the engine itself followed by its application
Euro truck engines typically had smaller sumps than US comparable engines due to the combustion process used. This also applied to Japanese engines of the past
In heavy truck engines the common factors of the costs involved with OCs including downtime and technical resources rule the roost
In my DD Series 60 engines I averaged 90kkms OCIs - the Manufacturer recommended 20kkms IIRC. I used a synthetic lubricant, synthetic media FF filters (then cleanable SS cartidges) and a centrifuge. OCIs averaged around every 5 months, topup around 1ltr/6kkms and the sump capacity was around 38lts
HerrStig - Industrial diesel engines have large sumps for a number of reasons. Prime amongst these is the actuial design of the engine itself followed by its application
Euro truck engines typically had smaller sumps than US comparable engines due to the combustion process used. This also applied to Japanese engines of the past
In heavy truck engines the common factors of the costs involved with OCs including downtime and technical resources rule the roost
In my DD Series 60 engines I averaged 90kkms OCIs - the Manufacturer recommended 20kkms IIRC. I used a synthetic lubricant, synthetic media FF filters (then cleanable SS cartidges) and a centrifuge. OCIs averaged around every 5 months, topup around 1ltr/6kkms and the sump capacity was around 38lts
- Status
Similar threads
