DIY 7500mi interval engine oil using 5qt bottle of Mobil1 0w-20 fuel economy oil (takes the whole thing), a K&N HP-1008 filter (why, because it's so easy to wrench off every time), and a new 9956-41-400 aluminum washer.
I drive an average of 100 to 150 miles a day doing deliveries. (Gen 3 2014 Plug In Hybrid) I do use Mobil 1 high mileage (label says protects up to 20,000 mi) oil and a Mobil 1 filters (packaging says the same for the filter) for my oil change. It runs extremely well! My engine feels great compared to the regular jiffy lube oil change! But I just recently came from Firestone last week while getting my alignment done and overall health check. I used to do oil changes every 5k but it was getting ridiculous changing every month and a half paying $70+ and the engine still feels exceptional. So with Mobil 1 HM I changed it every 8-10k miles. This time around, I topped off the last quart from my 5 quart bottle at 10K and will be doing my oil change at 15k. You can say I am pushing it a bit but I feel inclined to really test the Mobil 1 statement. But, back to Firestone, at the 11k miles of running the same oil. they gave me the news and said it’s still up to manufactures specifications and everything was good! It still runs great! If anything Mobil 1 really makes a difference and. But I’ll be changing oil every 8-10k to be on the conservative side, sure saves a heck a lot of money and not waste oil that’s still good.
My Service Writer AND 2 of the Hybrid Mechanics that I am allowed to speak with on occasions have all told me with the Full Synthetic Oil that 10,000 miles is a good interval to change the oil. Being my father's daughter, I cannot do it, I make my intervals at approximately 8,000 miles, give or take. I check my engine's dipstick and admittedly VISUAL inspection and smell the oil. I would like to share that since my very first oil change, I have used a TRD Oil Filter which has more structure and filtration.
Every 5k miles. Mobil 1 0w20. OEM filter.
Oil Filters, I always use OEM Subaru oil filters, I just buy the bulk 12 pack from my dealer.
Nice post, been using pennzoil platinum 5w30 for a while now and after seeing your results with valvoline I'm going to give that a try. Also gonna be switching to the wix filter instead of the usual subaru black filter to see how it goes.
OEM Mahle/Mann are best. Next best is the higher end Bosch filters.
Yes, the Mobil1-301, the Mann W940/25, the Purolator L30257, and the Fram PH3569 are all equivalent in capacity (though most people say the Fram is not equivalent in quality).
Only filter I’ve ever had fail on me is a FRAM. Never again.
I always thought the filter caught all of that stuff, I mean yea it got the bigger pieces but I wasn't expecting it to let all of that fine stuff through. Honestly makes me question how good the OEM Mann filters really are?
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