Make Up Oil Affect On OCI Test ?

[ChrisD46]

In spite of performing a proper break in on my 2017 Sonata GDI engine - she will burn some oil ... I burn about 1 qrt. over 5,000 miles of suburban driving .
The above said , what impact would adding 1 qrt. of "make up" oil have on a OCI test (i.e. Blackstone) to determine health of oil , oil strength left , etc. in determining what is the proper OCI for my vehicle ?

*My old technology PFI injection vehicles (Elantra & Sedona) do not burn a drop of oil over 6, 0000 miles (go figure ?)

 

[PPWarrior]

It does replenish additive packages til a certain extent from what I have read

 

[gathermewool]

I'd be upset about that much consumption on a new engine. I know there have been Subies with similar (or worse) consumption on new engines, but I've never experienced it. Even my previous '97 Legacy only burned oil if I real got on it, with lots of high-speed highway driving.

Regarding makeup oil, do the math. 20% make up oil won't exactly correlate to a 20% longer OCI, but it's likely close enough, considering most people don't stretch their OCI out to what they could anyway!

 

[TheLawnRanger]

I've seen tests where the owner told Blackstone about the make-up oil. They took it into consideration and made it part of the report. I add oil in between changes and even though it probably doesn't make a big difference, it keeps me from sending in a sample.

 

[oghl]

"Proper breakin" is up for interpretation. What is it for you? You may try another "proper breakin" procedure to see if it helps with the consumption.

I would extend the OCI to the max mileage or time permitted by the manual, with periodic top up of course. Sometimes the consumption may go down with more mileage or harder use (one of the other proper break in procedures).

 

[Linctex]

You'll then have to double the length of your OCI to get an accurate Analysis

 

[StevieC]

Originally Posted by ChrisD46
In spite of performing a proper break in on my 2017 Sonata GDI engine - she will burn some oil ... I burn about 1 qrt. over 5,000 miles of suburban driving .
The above said , what impact would adding 1 qrt. of "make up" oil have on a OCI test (i.e. Blackstone) to determine health of oil , oil strength left , etc. in determining what is the proper OCI for my vehicle ?

*My old technology PFI injection vehicles (Elantra & Sedona) do not burn a drop of oil over 6, 0000 miles (go figure ?)

Being a GDI engine you might want to try putting a catch can on it temporarily to see if its the PCV system or it is in-fact ring seal in such a new engine because I doubt it's valve seals this early on. My cousins Veloster which is first generation likes to put a lot of oil through the PCV system and it was one of the ones prone to valve gunk build-up. We messed around with a catch can trying to extend times between valve cleanings and that is how we discovered it. Just a thought to try so at least you know the cause.

 

[CharBaby]

Originally Posted by TheLawnRanger
I've seen tests where the owner told Blackstone about the make-up oil. They took it into consideration and made it part of the report. I add oil in between changes and even though it probably doesn't make a big difference, it keeps me from sending in a sample.


+1
Make sure that the amount of makeup oil is recorded and at what mileage it was added in conjunction with the UOA mileage.

 

[dave1251]

Originally Posted by StevieC
Originally Posted by ChrisD46
In spite of performing a proper break in on my 2017 Sonata GDI engine - she will burn some oil ... I burn about 1 qrt. over 5,000 miles of suburban driving .
The above said , what impact would adding 1 qrt. of "make up" oil have on a OCI test (i.e. Blackstone) to determine health of oil , oil strength left , etc. in determining what is the proper OCI for my vehicle ?

*My old technology PFI injection vehicles (Elantra & Sedona) do not burn a drop of oil over 6, 0000 miles (go figure ?)

Being a GDI engine you might want to try putting a catch can on it temporarily to see if its the PCV system or it is in-fact ring seal in such a new engine because I doubt it's valve seals this early on. My cousins Veloster which is first generation likes to put a lot of oil through the PCV system and it was one of the ones prone to valve gunk build-up. We messed around with a catch can trying to extend times between valve cleanings and that is how we discovered it. Just a thought to try so at least you know the cause.



Will a catch can do anything?

 

[ChrisD46]

Originally Posted by TheLawnRanger
I've seen tests where the owner told Blackstone about the make-up oil. They took it into consideration and made it part of the report. I add oil in between changes and even though it probably doesn't make a big difference, it keeps me from sending in a sample.

*I wrote Blackstone a request for reply on the subject - if / when they reply I will share what they said ...

 

[ChrisD46]

Originally Posted by gathermewool
I'd be upset about that much consumption on a new engine. I know there have been Subies with similar (or worse) consumption on new engines, but I've never experienced it. Even my previous '97 Legacy only burned oil if I real got on it, with lots of high-speed highway driving.

Regarding makeup oil, do the math. 20% make up oil won't exactly correlate to a 20% longer OCI, but it's likely close enough, considering most people don't stretch their OCI out to what they could anyway!

*I have a theory that GDI engines tend to require more make up oil (in general) .

 

[ChrisD46]

Originally Posted by oghl
"Proper breakin" is up for interpretation. What is it for you? You may try another "proper breakin" procedure to see if it helps with the consumption.

I would extend the OCI to the max mileage or time permitted by the manual, with periodic top up of course. Sometimes the consumption may go down with more mileage or harder use (one of the other proper break in procedures).

*Proper Break in = what the Hyundai owners manual recommended for first 750 miles (i.e. varied speeds not exceeding 60MPH ) .

 

[oghl]

Originally Posted by ChrisD46
*Proper Break in = what the Hyundai owners manual recommended for first 750 miles (i.e. varied speeds not exceeding 60MPH ) .


Yes, I suspected so. Break in procedures are similar to oil selection: more religion than anything else in most cases. Look up how new hand built engines are broken in on a dyno if you are interested in the other side of the break-in story. It should be an interesting read if nothing else. Some on this other side say that gentle break-in can sometimes cause oil consumption.

I use a similar method as the dyno break-in, using the steep hills rather than a dyno. None of my vehicles use any appreciable amount of oil through medium to long OCIs. Just to be clear, I am not saying that my break-in method is the cause of my vehicles not burning oil, or your break-in is the cause of your car consuming 1 qt every 5k. It's something you can try and see if it makes any difference. It won't cause any damage.

 

[gathermewool]

Originally Posted by ChrisD46
Originally Posted by gathermewool
I'd be upset about that much consumption on a new engine. I know there have been Subies with similar (or worse) consumption on new engines, but I've never experienced it. Even my previous '97 Legacy only burned oil if I real got on it, with lots of high-speed highway driving.

Regarding makeup oil, do the math. 20% make up oil won't exactly correlate to a 20% longer OCI, but it's likely close enough, considering most people don't stretch their OCI out to what they could anyway!

*I have a theory that GDI engines tend to require more make up oil (in general) .


Our DI turbo doesn't use any perceptible amount of oil over its 7500-mile interval