Engine oil Mobil or IDEMITSU

Mobil 1 has never failed me over 3 Wrx’s and 1 Brz and an old forester

I've been running Idemitsu oil in the XT and the wife's Crosstrek for the last four and five years and have been happy with it.

I’ve only used this Mobil1 oil for my 21 Camry SE. I do 5k intervals and it’s been great for the past 60K.

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.

Go with whatever is easy for you to source and also meets the VW502.00 standard. I personally run Mobil 1 0w-40 or Liquimoly 5w-40, whichever I can get cheaper.

That Mobil 1 5w-30 has a tendency to burn off, so it might be a bad combo.

Fellas, Don't bother running Mobil1 for extended period of time. I have done 2 consecutive oil tests on Mobil1 0W-40. One with 6200 miles and the other was at 4700 miles. Used OEM filters in both cases. Results: With the 6200 mile drain interval, the iron and the lead levels were up there through the roof! With the 4700 mile drain interval, the iron was within average and the lead was couple of points above the average.