Haven’t seen anyone here pushing intervals without at least one or two uoa’s Thant’s pretty mandatory.
For sure. In reality, HPL is not nearly as expensive as some make it out to be. I got 10 gallons for about $2 less per quart than preferred price on Amsoil SS.
Agreed.
To participate, I'm running my own test with 1 qt of VR&P with 3.5 qt of M1 EP that already has 10k miles on it. Running to 15k miles OCI. This starts the cleaning immediately. Based on my previous similar tests with Valvoline High Mileage leak seal oil when it first came out, I expect full bottom end engine cleaning with the 22% level of VR&P oil. Since I am no longer in charge of Sunoco's race fuels, production fuels, & oil development test labs, the cleaning level must be estimated w/o teardown. The test bed is subjected to about 10 full throttle accelerations per day, so the oil maintenance schedule is considered severe service.
You are using a coupon code so lets be genuine here, HPL is not cheaper.
Silicon (aka dirt) can cause this type of wear.
Go for it
I don't need to people already do it, and I don't believe in extended oil change intervals no matter what oil it is including HPL, Amsoil, Mobil 1, etc.
It is when you compare it to the on-the-shelf local offerings, and you decide to run the same OCI based of beliefs and such.
I run the oil until science tells me otherwise, there is no basis on beliefs, and such.
Interesting post. Thanks. For a low cost Group III Full Synthetic Dexos 1 Gen 3 rated oil like Walmart's Supertech Full Synthetic 5W-30, what would you view as a safe extended oil change interval?
Man, I am certainly no expert on lubes! Personally, for my tame motors I wouldn’t hesitate 10k, maybe longer if uoa was done.
Which grade of HPL did u use? I just bought the passenger premium plus.
Order form indicates PC 5w20 no VII. So I didn't remember correctly when I said 0w20 in my earlier post. Sorry about that!
Thanks. Why did u select High Performance Lubricants’ No VII engine oil? This is the more advanced grade. In an earlier email, David recommended the premium plus grade.
I ran a test where I changed the oil at 5k - did uoa + particle count, no filter change, 5k - did uoa + particle count, no filter change,5k - did uoa + particle count, a filter change. The 4 and 6 micron particles went sky high. The wear metals did not trend higher or indicate any issues. 5K with a filter change is highly recommended.
I chose HPL due to Dave's personal interaction with many of the BITOGers, the highly esteemed Dr. Rudnick's link with HPL, and the reports made from previous and current customers. In short, I believe that they have a product that is as good as is available in the marketplace. I chose No VII because my Accord was consuming a bit of oil, so I wanted to go a bit thicker at the higher temperature end of operation and this has a higher HTHS rating than the 0w20's (check me on this, as I'm relying upon my memory). I think the cleaning abilities are similar between the HPL products, so that wasn't a factor. I posted pictures of the valve train when I replaced a seeping valve cover gasket...sure looks clean for a car with over 100,000 miles! Part of that was previous oils doing a good job, of course. BUT, the kicker is...the car no longer consumes oil...so something changed for the better...my guess is ring lands were freed up, but I don't actually know for certain.
