New 2018 Hyundai hybrid

[oil pan 4]

Now that I'm pretty sure the coldest winter days are past I changed oil at 5,704mi, 118hrs. With 52,778 on the car.
Ran a Royal purple filter, dumped all the old oil out and reused it. We'll see what a RP filter looks like after about 10,000 miles on it.
Last oil change I filled it right to the full mark with Pennzoil Platinum, didn't add any oil or very little oil. Oil test is in the mail.

I used Pennzoil Platinum 10w30 this time. Hopefully it's more shear stabile than 5w30 Pennzoil Platinum.
Filled it up just past the low mark and I'll add a little 20w-50 at a time as the miles run up on the oci. I'm going to try and run it at least 6,600 miles and test the oil, cut open the filter, ect.
My driving forecast for this calendar year is "a lot", probably going to have a thousand miles put on the car and this oci by March 1.

 

[kschachn]

Now that I'm pretty sure the coldest winter days are past I changed oil at 5,704mi, 118hrs. With 52,778 on the car.
Ran a Royal purple filter, dumped all the old oil out and reused it. We'll see what a RP filter looks like after about 10,000 miles on it.
Last oil change I filled it right to the full mark with Pennzoil Platinum, didn't add any oil or very little oil. Oil test is in the mail.

I used Pennzoil Platinum 10w30 this time. Hopefully it's more shear stabile than 5w30 Pennzoil Platinum.
Filled it up just past the low mark and I'll add a little 20w-50 at a time as the miles run up on the oci. I'm going to try and run it at least 6,600 miles and test the oil, cut open the filter, ect.
My driving forecast for this calendar year is "a lot", probably going to have a thousand miles put on the car and this oci by March 1.

You’re using a Blackstone analysis to determine shear stability?

 

[oil pan 4]

You’re using a Blackstone analysis to determine shear stability?

No I'm not using Blackstone labs to test the shear stability of this oil.
I've already found that running Pennzoil Platinum 5w-20 or 5w30 alone in this engine for more than around 5,500mi the oil shears out of grade.
Now I'm going to run 10w30 and see if the same thing happens.

 

[kschachn]

No I'm not using Blackstone labs to test the shear stability of this oil.
I've already found that running Pennzoil Platinum 5w-20 or 5w30 alone in this engine for more than around 5,500mi the oil shears out of grade.
Now I'm going to run 10w30 and see if the same thing happens.

How do you know this?

 

[oil pan 4]

How do you know this?

Previous tests.

 

[kschachn]

Previous tests.

Sure. You ever post them here?

 

[Bkdc]

I think there are definite cons of considering a hybrid if you live in frigid weather. I don’t think I’d buy hybrid if I had cold winters. Or I’d be changing my oil a lot more frequently.

 

[oil pan 4]

Sure. You ever post them here?

I didn't know there was a rule that requires me to to do so. If you you don't have anything useful to say how about you go get lost.

 

[oil pan 4]

I think there are definite cons of considering a hybrid if you live in frigid weather. I don’t think I’d buy hybrid if I had cold winters. Or I’d be changing my oil a lot more frequently.

I'm in New Mexico. Winters are short with brief periods that get to around 0F.

 

[Propflux01]

From your last oil samples, looks like you have a leaking injector or two. Ev3n with stop-start, that’s some serious fuel in the oil.

 

[Brons2]

From your last oil samples, looks like you have a leaking injector or two. Ev3n with stop-start, that’s some serious fuel in the oil.

Hyundai DI motors are pretty well known for excessive fuel, of course being a hybrid doesn't help.

 

[OVERKILL]

It's good enough. Then if I just switched labs then I would be stating a new data set. I figured out what to do to keep the viscosity out of the danger zone what ever that viscosity break down cause may be.

No, it's really not good enough. They can be off by several whole percentage points. You've likely got at least 5% fuel there with that 325F flashpoint.

 

[OVERKILL]

Previous tests.

If they were Blackstone tests, they didn't inform you about fuel or shear, due to their inability to measure fuel, so it's just a WAG. You really need to use a lab that does proper GC to determine what factors are in play here.

 

[oil pan 4]

From your last oil samples, looks like you have a leaking injector or two. Ev3n with stop-start, that’s some serious fuel in the oil.

Here's the used oil analysis I never did according to katchcan.

This car gets relentlessly short tripped by my wife driving it to work.
All these tests are with 5w-20.
The tests where I added a quart or half quart was 10w30 at first and didn't do anything, then I tried 15w40 after that for a couple early tests, seemed to help some. Then 20w-50 oil since that 33,000mi and up test. Notice how the 5w-20 with a quart of 20w-50 oil barely stayed in grade.
Note all the Pennzoil Platinum 5w-20 tests I've seen had the oil around 9 to 9.5cSt.
Look at those early tests where I just ran 5w-20, shear and fuel took the viscosity down to 5cSt.
If it was a leaky injector it wouldn't get better over time.
See how after those first tests the oci miles went up and fuel went down?
That's me eliminating all unnecessary short trips, putting it in sport mode and driving on the highway at least once a week. More so in the winter.

 

[oil pan 4]

If they were Blackstone tests, they didn't inform you about fuel or shear, due to their inability to measure fuel, so it's just a WAG. You really need to use a lab that does proper GC to determine what factors are in play here.

Yeah i know their fuel numbers aren't that reliable. But let me assure you those early tests absolutely stunk of fuel. I smelled it just checking the oil and that's why I did that first 3,500mi oil change and test.
I'll do a project farm style burn off. Next oil change I'll weight some oil, cook it and weight it again. But it's not a huge problem any more, like it was.

 

[OVERKILL]

Here's the used oil analysis I never did according to katchcan.
View attachment 262209
This car gets relentlessly short tripped by my wife driving it to work.
All these tests are with 5w-20.
The tests where I added a quart or half quart was 10w30 at first and didn't do anything, then I tried 15w40 after that for a couple early tests, seemed to help some. Then 20w-50 oil since that 33,000mi and up test. Notice how the 5w-20 with a quart of 20w-50 oil barely stayed in grade.
Note all the Pennzoil Platinum 5w-20 tests I've seen had the oil around 9 to 9.5cSt.
Look at those early tests where I just ran 5w-20, shear and fuel took the viscosity down to 5cSt.
If it was a leaky injector it wouldn't get better over time.
See how after those first tests the oci miles went up and fuel went down?
That's me eliminating all unnecessary short trips, putting it in sport mode and driving on the highway at least once a week. More so in the winter.

You had absolutely massive amounts of fuel in those early tests, and probably around 5% in the more recent one, less in the 33,000 mile one, but about the same in the one before it. You really need to use a different lab if you are trying to figure out what's shear and what's fuel.

 

[kschachn]

I didn't know there was a rule that requires me to to do so. If you you don't have anything useful to say how about you go get lost.

No, but you are at the same time posting a Blackstone test which is completely unreliable for determining mechanical shear of the VM. So which is it? I need to get lost for asking you to make it clear what you're talking about? As far as I can see you have zero evidence of any shear.

Often times on here the Shear Monster is likened to "Marsha, Marsha, Marsha" when for the vast majority of viscosity deviations it is fuel dilution. Just like Overkill notes above for your case.

 

[kschachn]

Here's the used oil analysis I never did according to katchcan.
View attachment 262209
This car gets relentlessly short tripped by my wife driving it to work.
All these tests are with 5w-20.
The tests where I added a quart or half quart was 10w30 at first and didn't do anything, then I tried 15w40 after that for a couple early tests, seemed to help some. Then 20w-50 oil since that 33,000mi and up test. Notice how the 5w-20 with a quart of 20w-50 oil barely stayed in grade.
Note all the Pennzoil Platinum 5w-20 tests I've seen had the oil around 9 to 9.5cSt.
Look at those early tests where I just ran 5w-20, shear and fuel took the viscosity down to 5cSt.
If it was a leaky injector it wouldn't get better over time.
See how after those first tests the oci miles went up and fuel went down?
That's me eliminating all unnecessary short trips, putting it in sport mode and driving on the highway at least once a week. More so in the winter.

Another Blackstone test? Really? That one, like the others cannot discriminate between fuel dilution and mechanical shear of the VM.

And do I ridicule you with a misspelling of your screen name? Grow up.

 

[Wireman1987]

5w20/30 change 2x yr. I get condensation under my oil cap as well. Short work commute and winter weather non hybrid vehicle. Don’t lose sleep over it get the vehicle out for a good highway stretch it’ll burn off.

You could most likely find oe oil filters from reputable dealers on eBay for a good price. My 2 cents.

 

[Propflux01]

Here's the used oil analysis I never did according to katchcan.
View attachment 262209
This car gets relentlessly short tripped by my wife driving it to work.
All these tests are with 5w-20.
The tests where I added a quart or half quart was 10w30 at first and didn't do anything, then I tried 15w40 after that for a couple early tests, seemed to help some. Then 20w-50 oil since that 33,000mi and up test. Notice how the 5w-20 with a quart of 20w-50 oil barely stayed in grade.
Note all the Pennzoil Platinum 5w-20 tests I've seen had the oil around 9 to 9.5cSt.
Look at those early tests where I just ran 5w-20, shear and fuel took the viscosity down to 5cSt.
If it was a leaky injector it wouldn't get better over time.
See how after those first tests the oci miles went up and fuel went down?
That's me eliminating all unnecessary short trips, putting it in sport mode and driving on the highway at least once a week. More so in the winter.

Hyundai DI motors are pretty well known for excessive fuel, of course being a hybrid doesn't help.

I will agree short tripping a GDI engine will dilute the oil, but be advised These engines are also known for leaky injectors. What BS is showing on the sample is most likely lower than it actually is. Your running it on the highway, and even the varying amounts of detergents in the gas you are using can both help or hinder your fuel % issue. If you are dropping a wide margin of a grade or two from dilution, leaky injectors should be at least looked into.