M1 0W-40- severe service, extended OCI

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vinu_neuro

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The current oci of M1 0W-40 and M1 filter is past 10k miles now, and I'm wondering whether to leave it in 1 or 2k more miles.

-4.5qt sump

-Except May-August, during the week the engine sees multiple 1mi trips a day. I get horrific gas mileage in this use so I know the oil is getting hosed with fuel.

-Every weekend it goes on a 150 mile round trip. This is the only time it gets up to operating temp.

-In this last 10k miles I've added 4 or 5 make-up quarts

After the first analysis I'll have a clear idea of where this oil stands with this type of usage. Still wondering whether to push for a couple more thousand miles. If not for the make-up oil, I wouldn't consider it. Thoughts?
 
Typically I would say dump it now, but considering how much makeup oil you've been adding, it may not be too bad. You've added as much fresh oil as the car's entire oil sump.

How about you keep it in there, but send a sample in right now and see what you get? Based on the results you can decide whether to dump it or continue on a bit longer.
 
IIRC the H22A4 oil sump is 5.1qts with the filter.

With normal driving:
Based on replenishing 1qt/2500 miles my calculator shows to change it after 18000 miles.
Based on replenishing 1qt/2000 miles my calculator says 21500 miles.

If you wana stay on the safe side with your short trips, try 11900 - 14100 miles depending on whether its 1qt/2500 or 1qt/2000 respectively.

There was a bunch of Civic Si UOA floating around here where he went 13k miles on 0w-40 with 3.5qt makeup oil, his TBN was still 5.2!!!
 
Originally Posted By: randomhero439
IIRC the H22A4 oil sump is 5.1qts with the filter.

With normal driving:
Based on replenishing 1qt/2500 miles my calculator shows to change it after 18000 miles.
Based on replenishing 1qt/2000 miles my calculator says 21500 miles.

If you wana stay on the safe side with your short trips, try 11900 - 14100 miles depending on whether its 1qt/2500 or 1qt/2000 respectively.

There was a bunch of Civic Si UOA floating around here where he went 13k miles on 0w-40 with 3.5qt makeup oil, his TBN was still 5.2!!!


Umm! So if an engine uses 1qt of top up oil every 100 miles you don't need to change it?? I presume that includes an allowance for a blocked filter.
 
MMMMMMMM a h22a4.... h2b that thing
laugh.gif


You basically have m1 0w40 with 5k miles on it after completely changing the oil by adding that much make up oil.

I would wait till spring to change it when its not freezing out for peace of mind.

Just curious, why do you use feel the need to use m1 0w40 when any 30wt is more than sufficient for a stock h22?
 
Originally Posted By: skyship
Originally Posted By: randomhero439
IIRC the H22A4 oil sump is 5.1qts with the filter.

With normal driving:
Based on replenishing 1qt/2500 miles my calculator shows to change it after 18000 miles.
Based on replenishing 1qt/2000 miles my calculator says 21500 miles.

If you wana stay on the safe side with your short trips, try 11900 - 14100 miles depending on whether its 1qt/2500 or 1qt/2000 respectively.

There was a bunch of Civic Si UOA floating around here where he went 13k miles on 0w-40 with 3.5qt makeup oil, his TBN was still 5.2!!!


Umm! So if an engine uses 1qt of top up oil every 100 miles you don't need to change it?? I presume that includes an allowance for a blocked filter.


Yeah, and yeah you gotta change the filter. As to when, i would refer to some more experienced filter experts on here.
 
Originally Posted By: skyship
Originally Posted By: randomhero439
IIRC the H22A4 oil sump is 5.1qts with the filter.

With normal driving:
Based on replenishing 1qt/2500 miles my calculator shows to change it after 18000 miles.
Based on replenishing 1qt/2000 miles my calculator says 21500 miles.

If you wana stay on the safe side with your short trips, try 11900 - 14100 miles depending on whether its 1qt/2500 or 1qt/2000 respectively.

There was a bunch of Civic Si UOA floating around here where he went 13k miles on 0w-40 with 3.5qt makeup oil, his TBN was still 5.2!!!


Umm! So if an engine uses 1qt of top up oil every 100 miles you don't need to change it?? I presume that includes an allowance for a blocked filter.


Yeah, basically. I had a '75 Vega that used a quart every 100 miles, and I just got used oil from my dad and dumped it in. Changed the filter every year, and it ran fine until dad and I rebuilt the engine with iron sleeves a couple of years later.
 
Originally Posted By: randomhero439
IIRC the H22A4 oil sump is 5.1qts with the filter.

With normal driving:
Based on replenishing 1qt/2500 miles my calculator shows to change it after 18000 miles.
Based on replenishing 1qt/2000 miles my calculator says 21500 miles.

If you wana stay on the safe side with your short trips, try 11900 - 14100 miles depending on whether its 1qt/2500 or 1qt/2000 respectively.

There was a bunch of Civic Si UOA floating around here where he went 13k miles on 0w-40 with 3.5qt makeup oil, his TBN was still 5.2!!!
Originally Posted By: skyship
Think about switching to a major brand HM oil as it should cut the consumption. 10K miles max OCI until you see the UOA results are OK.


You think a hm oil will curb consumption when he is already using a thicker than specified oil?
I'll explain this to you so you don't get confused. Hm oils tend to be on the. Thicker side of the advertised grade. That's the primary reason consumption gets curbed.
Consumption is not to be confused with leaking. If the oil is leaking out a hm oil may slow the leak.
He didn't say it was leaking so we will assume its consuming the oil and if that's the case a hm oil isn't going to help since the oil in the sump is already thicker than a hm oil in the 30 grade flavour will be. [

quote=skyship]
Originally Posted By: randomhero439
IIRC the H22A4 oil sump is 5.1qts with the filter.

With normal driving:
Based on replenishing 1qt/2500 miles my calculator shows to change it after 18000 miles.
Based on replenishing 1qt/2000 miles my calculator says 21500 miles.

If you wana stay on the safe side with your short trips, try 11900 - 14100 miles depending on whether its 1qt/2500 or 1qt/2000 respectively.

There was a bunch of Civic Si UOA floating around here where he went 13k miles on 0w-40 with 3.5qt makeup oil, his TBN was still 5.2!!!


Umm! So if an engine uses 1qt of top up oil every 100 miles you don't need to change it?? I presume that includes an allowance for a blocked filter. [/quote]

Where did anyone suggest leaving the filter on forever?

Op. I change my filter every 10000 miles or every second oil change. I use an extended guard usually but once I use up my stash I'll be stocking up on fram ultras.
 
Originally Posted By: vinu_neuro
The current oci of M1 0W-40 and M1 filter is past 10k miles now, and I'm wondering whether to leave it in 1 or 2k more miles.

-4.5qt sump

-Except May-August, during the week the engine sees multiple 1mi trips a day. I get horrific gas mileage in this use so I know the oil is getting hosed with fuel.

-Every weekend it goes on a 150 mile round trip. This is the only time it gets up to operating temp.

-In this last 10k miles I've added 4 or 5 make-up quarts

After the first analysis I'll have a clear idea of where this oil stands with this type of usage. Still wondering whether to push for a couple more thousand miles. If not for the make-up oil, I wouldn't consider it. Thoughts?


Maybe you should try using a synblend high-mileage 10w40. It may help with the oil consumption issue, and would be easier on the bank account in the meantime than buying M1 0w40.
 
Thanks for the feedback.

I'll be home again in March. Will leave it in there till then, at which point it'll probably be at 11k. With all the short-trips in freezing weather I'm not expecting a pretty uoa.

The reason I'm using M1 0W-40 is many fold.

This oil (MB 229.5 approved) has the TBN necessary to combat the fuel and moisture issues during the week.

The car is geared particularly short so on the highway I'm at a minimum of 4k rpm, usually more. Oil temperatures run high.

The H22a4 engine has has issues with cam/rocker galling with lower phosphorous oils.

With the oil consumption, figured the 9% noack of M1 0W-40 would help.

I only go home a few times a year and want to change the oil myself, so I want an oil that can make it the entire year (10-13k miles).

This engines sees the extremes of severe use. An oil that's 229.5 and A40 approved is pretty much as good as it gets. The only other oil I'd consider is Castrol 0W-30. There are other good Euro oils, but only these two are cheap and easy to get.
 
Last edited:
Originally Posted By: vinu_neuro
Thanks for the feedback.

I'll be home again in March. Will leave it in there till then, at which point it'll probably be at 11k. With all the short-trips in freezing weather I'm not expecting a pretty uoa.

The reason I'm using M1 0W-40 is many fold.

This oil (MB 229.5 approved) has the TBN necessary to combat the fuel and moisture issues during the week.

The car is geared particularly short so on the highway I'm at a minimum of 4k rpm, usually more. Oil temperatures run high.

The H22a4 engine has has issues with cam/rocker galling with lower phosphorous oils.

With the oil consumption, figured the 9% noack of M1 0W-40 would help.

I only go home a few times a year and want to change the oil myself, so I want an oil that can make it the entire year (10-13k miles).

This engines sees the extremes of severe use. An oil that's 229.5 and A40 approved is pretty much as good as it gets. The only other oil I'd consider is Castrol 0W-30. There are other good Euro oils, but only these two are cheap and easy to get.


Last note about GC vs. M1. As an oil enthusiast, it bothers me very much that Castrol is so opaque about even basic specs of their oils that I'd like to give my money elsewhere if possible. I do also genuinely think that GC has been left behind (though with the MB 229.5 approval I wouldn't hesitate to use it if there wasn't a choice).
 
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