HPL SuperCar 5w-40 for 2.0T Honda

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Just acquired a 2.0T Honda Accord with only 20k miles on it. I drained the oil as received to run a change of VRP 5w30 to clean out any deposit nucleation that might have started already. This initial ODI gives me some time to ponder long term strategy.

I'm thinking about long term going to a 5w40 oil. Here's why:

1) The newer GDI Hondas are known to struggle with fuel dilution in certain duty cycles (i.e. normal driving instead of hot rodding). Data highlighted by Lake Speed Jr suggests running fuel dilution in the ring pack can be DOUBLE of what the value in the oil analysis (pan sample) shows.
2) CAFE is pushing oil pump capacity to the minimum and also oil pressure to the minimum (parasitic drag reduction equals MPG). This lowers oil pressure especially at lower engine RPM where those same CAFE rules encourage carmakers to operate their engines for best MPG. (taller gearing on highway cruising)
3) Oil ring tension is also reduced to the minimum on newer engines, increasing consumption with thin oil

Where I live, a 5w oil is thin enough for all winter conditions. The extra five degrees of a 0w is not needed as I have essentially instant oil pressure even in rare single digit cold starts.

Now, most of the 5w40 oils are "euro" oils I'm sure chock full of cheap VIIs that will shear down to 5w30 anyway. SO I'm thinking HPL oil in 5w-40 in the Supercar line to get the ultimate in antiwear, antioxidation, and shear stability.

I want to keep this engine as clean and low-wear as possible.
 
How often are you planning on changing and how many miles do you drive
+1000
Fantastic question!
Without this information, its rather difficult to determine suitability for the application.

If OP wants frequent OCI's, nothing thicker than 5w30/10w30 is necessary.
If OP wants to prolong OCI's, then a 5w40 etc would be reasonable.
 
+1000
Fantastic question!
Without this information, its rather difficult to determine suitability for the application.

If OP wants frequent OCI's, nothing thicker than 5w30/10w30 is necessary.
If OP wants to prolong OCI's, then a 5w40 etc would be reasonable.

The OP wants 2 use HPL Supercar 5W-40, he will change it when he changes it. HPL has many oils with different grades, so you are saying that there 5W-40 oil will last longer via UOA's than there 5W-30 or 10W-30 oils?
 
The OP wants 2 use HPL Supercar 5W-40, he will change it when he changes it. HPL has many oils with different grades, so you are saying that there 5W-40 oil will last longer via UOA's than there 5W-30 or 10W-30 oils?
Depending on a UOA, maybe.
 
me personally i don't see why someone would want to ~$100 for 6 quarts of oil (not sure exact pricing of supercar but around there), it def isn't liquid gold but it sure is priced similarly.

countless bitoger's have ran engines to the moon with xw20 oil over the years, i get it yours is a fuel diluter but even engines that have fuel diluted are making it to insane mileage.

lets assume the avg car makes it to insane mileage with xw20 oil but does not fuel dilute, yours with a xw30 would would be enough cushion even with the fuel dilution

there is nothing to say u NEED a xw40 to reach to 1,000,000 miles

if you are serious about good protection then theres nothing to say a top of the line walmart shelf oil can't get you that, the best of the bunch at the moment seems to be any of

m1 esp 0w30
m1 fs 0w40 or 5w40
castrol edge 5w40 euro
valvoline 5w40 euro
+ whatever else i forgot about

all of these run for $30 ish give or take, meet some of the highest oil approvals and are humanly priced, u could do 2 oci's on these and even change the fillter and it would still be cheaper then the supercar oil, just food for thought
 
me personally i don't see why someone would want to ~$100 for 6 quarts of oil (not sure exact pricing of supercar but around there), it def isn't liquid gold but it sure is priced similarly.

countless bitoger's have ran engines to the moon with xw20 oil over the years, i get it yours is a fuel diluter but even engines that have fuel diluted are making it to insane mileage.

lets assume the avg car makes it to insane mileage with xw20 oil but does not fuel dilute, yours with a xw30 would would be enough cushion even with the fuel dilution

there is nothing to say u NEED a xw40 to reach to 1,000,000 miles

if you are serious about good protection then theres nothing to say a top of the line walmart shelf oil can't get you that, the best of the bunch at the moment seems to be any of

m1 esp 0w30
m1 fs 0w40 or 5w40
castrol edge 5w40 euro
valvoline 5w40 euro
+ whatever else i forgot about

all of these run for $30 ish give or take, meet some of the highest oil approvals and are humanly priced, u could do 2 oci's on these and even change the fillter and it would still be cheaper then the supercar oil, just food for thought
Depends on how you look at it I guess. Compared to what I spend on gas, the price of HPL for what's basically a once a year oil change is insignificant.
 
I would use a 40 grade in that vehicle. I've got a Civic with a little 1.7l NA, port injected motor that I used 5w40 in the past 3 oci. I just recently changed out the HPL PCMO 5w40 after 10k miles to HPL 0w30 Supercar just to see if there's an increase in my mpg. So far, I'm seeing only a 2 mpg increase on freeway driving, & will probably switch back to a 40 grade after I use up my 30. I had no issues running a 5w40 in that car. It also doesn't really see anything below 3k rpm, & prefer the extra viscosity. Just going 40 mph in 5th gear keeps rpm @ 2k. Like TiGeo said, their 5w40 Supercar is the exact same formula as their 5w40 Euro. However, the 0w40 Supercar, along with the other grades in the lineup, use Supercar formulation. Either way, I was told by David from HPL that shear wasn't usually an issue with their oils. Including the regular PCMO lineup. I sent in a sample of the HPL PCMO 5w40 I drained last week to wear check for analysis. It was in use for just under 10k miles, a filter change @ 5k miles & no top off with any oil the entire oci. I'll post it when I get results.
 
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Man can I get some of whatever you're running to get 200k rpm 🤣

I don’t see a big advantage to the 5w over the 0w in an oil as well formulated as the HPL stuff unless you’re just simply against VIIs. The VIIs they’re using are high enough quality that I personally don’t put any stock in the idea that not using them is superior.

Any bit of startup wear protection benefit I can get is a good thing in my book. Especially at $100/6qt. To me the big benefit of going with HPL is the formulation being such that those wide viscosity ranges are achieved while simultaneously maintaining shear stability. If I wanted to go with a 10w30 there are plenty of Walmart oils with decent HTHS performance.
 
Going several grades thicker seems a bit unnecessary to me. HPL PCMO 5W-30 has an HTHS of 3.26 cP, which seems plenty high enough. If you want to use HPL Supercar, the 0W-30 has an HTHS of 3.5 cP.

3) Oil ring tension is also reduced to the minimum on newer engines, increasing consumption with thin oil
The main reason that thinner grades tend to increase oil consumption is that they tend to have higher volatility. The viscosity itself doesn't matter much. Any of HPLs oils will have low enough volatility that there should be little difference in consumption between grades.
 
The car calls for 0W-20. I don't see the point in jumping all the way up to 40. I'd use either the recommended oil or maybe a 30 weight, whatever tickles your fancy, and call it done.
 
Going several grades thicker seems a bit unnecessary to me. HPL PCMO 5W-30 has an HTHS of 3.26 cP, which seems plenty high enough. If you want to use HPL Supercar, the 0W-30 has an HTHS of 3.5 cP.


The main reason that thinner grades tend to increase oil consumption is that they tend to have higher volatility. The viscosity itself doesn't matter much. Any of HPLs oils will have low enough volatility that there should be little difference in consumption between grades.
Yes low tension piston rings must be considered.

Highest quality very thin oil has low volatility in appropriate situations.

Some designs keep operating temperatures at a quite moderate level too.
 
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