10w30 HDEO or 15w40, others. What's in your engine?

Shell Rimula R4x 15W40 in my 1GD Toyota, and Rimula R4x 20W50 in my Kubota v2203 genset..both flavors are CI4 HDEOs. Genset runs maybe 10 hours a month aside from maintenance runs, and it doesn’t go below 14 degrees C here in Karachi, so I prefer not to go lower viscosity.

Is Rimula equivalent to Rotella?
 
....almost done w my little real world experiment as promised above with various oils and UOAs.....will be posting a thread with the results in HD oil analysis soon.....waiting on one more sample to get results back on...should have this week

it’s very interesting........stay tuned
Anxiously waiting. I’ve looked at the Blue Diamond oil and it looks great by the specs but nowhere near me to obtain any. Have to order it but it did have a reasonable price for 100% synthetic. Like I said I can’t wait to see how it did.
 
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