I run 0W-40 Mobil 1 European that meets the spec on the bottle. 10k changes since new.
Ive owned four 5.7s starting in 2005.
Changed all of them with 5w20 full synthetic, no real allegiance to a brand, but always a major brand (Mobil1, Valvoline, etc); typically 5k - 7k miles between changes .
2005 had 250k , burned no oil, died when it hit a tree
2006 had 240k, would use 1/2 qt over 5k miles after about 225k.
2013, traded in with 225k, burned no oil.
None of these ever had a valve cover off. I purchased the 06 and 13 new. The 2005 I purchased with 100k on it.
The 4th is a 2021 with 35k on it. So far, so good.
I've been running 5w30 Mobil 1 full synthetic on my 03 hemi. 238k miles and still running perfect with no tick.
Mobil 1 ESP has specs very close to Subaru Japans own Pleiades oils. Its got loads of great certs, is widely available, well priced and highly regarded by loads of people.
Ultra platinum 5w20, in the summer when I’m towing my boat a lot I’ll use 5w30 ultra platinum. That’s about it. The key thing is oil changes every 5k, do not do the 10k oil change interval
2014 1500 with no tick (85k miles). New to me truck and I’m running Pennzoil ultra 5w20 with a Royal purple filter. I might switch to the redline but the PUP was more accessible to me. In theory I live somewhere it could be super cold this time of year but it hasn’t. Depending on when I do my next oil change I might do the 5w30 if it’s going to be hot for awhile.
Edit to say that 5k oil changes for me max. I did my first one at 4k because I didn’t know what the engine had in it and wanted to get something good
I use Penzoil Ultra platinum 5w20 and a Mobil 1 filter. No issues so far, but I'm just closing in on 100k miles.
Pennzoil Platinum or Ultra Platinum 5w20. Good deals on it ordering from Walmart and usually free next day delivery.
Wix 57060 filter
I had consumption issues with Mobil-1 0W-40 in the W8, and Castrol/Valvoline 5W-40's showed signs of wear at higher mileage intervals when I ran a 10,000 OCI as recommended by VW.
i got a little valve clatter when i went to 0w40 on my next oil change i'll be using 5w40 (synthetic)
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