Originally Posted by ARCOgraphite
Originally Posted by Ignatius
. I think it will be my first and last time filling my sump with synthetic 5w20. Here is what I posted on another website:
I wanted to post a reflection on using synthetic 5w20 for two weeks and 1000 miles in my 2018 Outback 2.5L engine with 100,500 total miles on it now. Of note the weather has been very hot and humid by local standards, 90 degrees fahrenheit.
A few things I have noticed are that my engine is running much louder and hotter than it ever has ..... I have also noticed a little more start up noise that sounds like timing chain clatter but it only lasts for a second or two but it is noticeable to my ear, this could just be a timing chain in need of a tensioner thoug
Again I am not knocking the usage of 5w20 but at this time I choose to use it on an experimental basis to gauge the results, for this car/engine it had much do with an oil consumption issue it has developed that I am tracking.
What filter did you run? The Subaru Blue? We have a FB2.0 and the TC is noisy most of the time at starts. It wasn' No Oil Consumption on the FB2.0 though.
This can be batch dependent also. I Have run same oil back to back with widely varying results.
I do think your perception is based on the ambeint temperature as it has a large influence on on sump temps.
Unless you keep a journal and record and chart trip ending temps on the same commute with same conditions
the perceptions are not validated. Notice I didn't say meaningless
If I had a 2.5 L engine I would be running 5W30.
You have the wrong oils.on Deck
Though the EP is not a bad choice.
Valvoline
Advanced 5W30 was the best moderately priced synthetic out there last year that I have run, IMO
And I have UOA to back up this assertion - for argument sake.
Big problem with Subaru is their filter choice and OE service part manufacturer.
Maybe go to Mazda parts and buy a
Fabrique' au Japon Mazda Tokyo Roki ( same OE as factory subaru ) and run that.
I have noted and validated that Subaru FB dry start every time after a short sit.. Empty filter can.
That will cause startup noise. That is not the lubricant's fault, but rather a very
poor engineering/design choice.
On the Fuji engineers.
We in the U.S have historically designed the best Machines. Not Germany or Japan - Though You can argue Italian design with me.
They have some great stuff historically.
- Ken
.
Well sir I will have you know that your Crosstrek UOA with Valvoline heavily influenced my decision to stock up on Valvoline 0w20, so thank you for having it done and posting it here
Oil filters by OCI:
1. Subaru OEM
2. K&N HP-1010
3&4. Fram Ultra XG7317 (two consecutive intervals)
Current: Fram Ultra XG7317