Hey everyone, Just wanted to share my recent Blackstone oil analysis report with everyone. I guess it looks fine per Blackstone's comments. Fuel dilution is at 1.8% and they say under 2.0% is considered fine.

Some background on my driving since I see in other posts its a topic of conversation:

• 2019 A-Spec
• Current Miles: 45,800
• Oil Change Interval: 5,000
• Since about 20,000 miles - only have used Mobil 1 M1-110a filter + Mobil 1 Full Synthetic 0w-20
• 50/50 mix of city/streets & hwy miles
• I typically drive relatively aggressively - average 19MPG on only Chevron 91
• everything mechanical is stock
• used to commute about 80 miles/day pre-covid. Now drive about 100 miles per week.
  

 

Before you took this oil sample, was your last drive 15-20 min for oil to get hot? They say that is you take a car for a long drive it may remove some oil dilution, but not guaranteed…

also, I did some reading on BITOG, and they say that Polaris Labs (you can get test kit on amsoil website) does more accurate measurement of fuel dilution than blackstone. The scary thing that Blackstone often under-estimates !

I had blackstone do UOA on my 10yr old lexus, with 10k OCI they said fuel dilution is under 0.5%. Mostly short trips. Next oil change I will do UOA for RDX.

 

I am using Mobil1 0w-20 Extended Performance that is only $3 more than regular Mobil1. It has about 11C higher flashpoint. Not saying it will help, but something to consider.

 

Do you have an older oil report from when you drove 80 miles/day? With respect to oil dilution and flashpoint, I wonder how it compares to your new 100 mile/week routine.

 

Don't take this personally - but that oil test appears to be more your peace of mind, than really matters in real life - money better spent some-where else. I have never done that test, had vehicles last 300K+ miles + with yearly service and been super reliable. Not like Acura will do anything if there is a higher dilution of gas vs oil. Do you get this test done for the transmission or brake fluids, as they are exposed to similar conditions at after their effective life. Moving to a EV, you will never need to worry about this test for you conscious ever again.

 

Depends on what kind of car you drive and how you drive it. I used to send in my samples to Blackstone because my STI (especially at the track) had a tendency to shear the factory recommended 5w-30 oil to 20 weight (especially Mobil1 syn for some reason), with elevated metals as a result. It took a while before we were able to find an oil that worked well.

 

So does the mach e keep track of usable battery capacity loss over time? Similar objective...tracking wear. Asking for a friend :P

 

It’s not a waste of money. He knows that with his driving patterns he needs to watch for fuel dilution and potentially change oil sooner. Your old vehicles that you took to 300k are not GDI.

 

I did oil samples on my '16 ILX. When I changed to an aftermarket performance drop in air filter it went ugly. Changed back to factory and it cleared up. I didn't tell them I had changed the filter. There are good reasons to do samples.

 

YEARS ago, in another time and place, I used a K&N filter as I was told it would improve the performance of my Olds 442! What a pain in the arse! It didn't last long anyway! I went back to air factory filter. I can only imagine what it did for the engines longevity, but. they weren't know for longevity anyway!

Great sig. line.

 

@russianDude last drive prior to taking the sample was about 15 min....

That being said about Polaris Labs - I might pull another one and send that one out...

Out of curiosity regarding the warming & dilution, if I typically drive 20-30 min trips (way less short trips), would it be logical to think if thats they typical drive and if that drive removes dilution, is the warmed, lessened dilution sample actually the more accurate? not sure how I feel on that one...

Thanks for the info!

 

Unfortunately I do not.

 

I dont take it personally and it was for peace of mind. Some might say peace of mind does really matter in real life.

My sincere apologies for forcing you to read this post and look at the report. I didnt mean to waste your time. Have a great day.

Also not interested in an EV

 

I guess you are right, if 15min is your typical use, than its a good way to measure. Just keep in mind that some amount of fuel will get burned off after a long drive, but from what I understand some of it will not (no mater how long your drive).
Just something to keep in mind when u measure next time. I will be sending my sample to Polaris when its time to change oil, I am at 50%. Will report results

 

I typically drive less than 15 minutes at a time, so once a month I will do an hour drive to fully warm and evaporate any dilution. Continuous shot trips are very hard on ICE no matter how much you spend on oil. If you just make a longer than normal trip before a sample, you are lying to yourself.

 

Yeah I think all of this is the most logical... I will do the same and post my results when I get to that point in this oil....

Cheers man.. take care!

 

let me know when Texasrex21 gets back to you w/that info haha.. since he seems to know everything

 

Just my opinion - as the RDX is a mass produced vehicle and warranted by Honda/Acura. I personally don't see any reason to do that test (sure most RDX owners would agree), however if it makes you or anyone else more comfortable - my all means use it.

 

To play devils advocate, the CRV, Civic, and Accord 1.5T are all mass produced vehicles warrantied by Honda, yet without a UOA there wouldn't have been proof of the oil dilution issues. Honda certainly would not have issued a recall and extended the warranty if folks didn't make noise with substantive proof.

 

Agree - but it is rare for the average consumer of any mass produced vehicle to do these types of tests. Most just drive them till a issue arises or they need service.

 

As the majority think of a vehicle as an appliance.