Attributes of a motor oil you look for

Depends what it's going in.
Usually cheap with healthy additives package.
If it's going in a small engine I'm looking for something cheap and ends in a 40 or 50. Something with an SH, SG or SJ rating is a plus.
If it's for my wife's car something also kind of cheaper but also decent as the winter oil change gets taken out by fuel dilution a 3,500 to 4,500 miles and the summer oil change rarely hits 6,000 miles.
 
I like the oils to carry both API and ACEA (Euro) specs. Plus I like low Noack volatility, which can be a hard number to get from the manufacturer.

Lacking Noack numbers I usually go for a full synthetic with MB 229.5/.51 (10% or less) if I have the coin. Otherwise a viscometrically tight mineral oil like a 10W30 or 15W40 at a good price. Yes I can get 15W40 A3/B3/B4 name brand mineral PCMO oils in Australia, and yes I can use them in the middle of winter.
 
Very few are tribiogists. The professional tribiologists and vehicle engineers made it easy for us. They came up with specifications for the oil to meet that contains an assortment of attributes. I use an oil that meets the specs for my vehicles. Easy.
But history has proven the API and ILSAC specs inadequate due to the need for continuing "improvements". Some of the sequences allow for a high amount of wear, some rely on visual assessment. Meet or exceed is self-reporting to obtain certification.

Yes, not perfect - but I readily concede better than "wild west - anything goes".
 
Keep us posted if you don't mind. Thanks.
I am going in to my local FORD dealer for an alignment touch up as I dropped the right rear wheel into a washed out shoulder on a intersection. Tracking is not confident inspiring.
Now. Being Ford, they say Motorcraft SS, but as it was a value leader lube special I will not rule out "whatever bulk" was being pushed that quarter in the area. I will try to nose around the shop if the service manager or parts guy appears to deflect.

Years ago, at Subaru, they had an OC special, brought the Wife's Subaru there. This was during the "only use Genuine Subaru Motor Oil" period (which they later back off on). I saw they installed Peak 0w20. Car ran well on that until the oil was thoroughly heat soaked on a 2 hour trip - then the engine got extremely noisy.

Back to the FORD; I am quite curious what they installed, as I wish to use this "mystery" oil for the next OCI. - Arco

Screenshot 2024-07-08 100639.jpg
 
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