Years ago I had vowed to never used Mobil 1 but the price of $28.69 for 6 quarts and the 0W-40 year round oil was just too tempting. Well, not long after the 03 GS300 ~ 150K and 03 Odyssey ~ 220K both started seeping at the valve covers. Back to Rotella T6 and Swepco 308.
The Rotella I purchased when it was on sale for $12.00 a gallon without reading/knowing that it was a synthetic when I first acquired the Odyssey at 155K. It is the only Synthetic I use now. I think one change was at 10K and another 15K. Have always tried changing the oil every 6 months or max at 7K miles but just couldn't get around to it both times and the vehicles ran fine.
The Mobil 1 created 3 head gasket leaks years ago at different times so it took awhile for me to figure it out (88 Camry, 93 E300 and 99 Galant). Started using it around 94 and the Merc had a head gasket replacement at 60K. The other 2 cars had 100K to 200K when I introduce Mobil 1. I have not tried other Synthetics besides Mobil and Rotella (If My Memory Serves Me Right).
Here are two articles on Synthetic oils and why you should not switch or switch back and forth (especially Mobil )
Yeah I saw you figured out that small leak. Let us know about the oil consumption I’m always curious about that. One thing I’ve learned all my cars use more (ie some) when they get a lot of highway time.
Life is like a box of chocol- make that an engine compartment. You never know where all the hoses go. Unless you read the diagram on the hood. When all else fails, follow the instructions. Do it right the 2nd time. Be good do good feel good live good.