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Perhaps it was a typo and meant to be "genteel" or even "gentile". No matter which was intended, it could use clarification.

I drained the factory fill from my 300+ HP Lexus V6 with just a few hundred miles on it. Put in Mobil ESP 0w30. Just drove a 500 mile round-trip at mostly 75-80 mph, with the typical stop-and-go Atlanta traffic. Two adults in the vehicle. Averaged 34 mpg (hand calculated). Don't know what mpg...

Unless you are starting your engine at about minus 35 F, there is no difference in "dry start" (however you choose define that) performance between a 0w-30 and a 5w-30. Lots of things to worry about...but this isn't one of them.

Sorry, I took post #795 as a stand-alone with a question, as I hadn't remembered reading your earlier posts. I see now that you weren't entertaining other advice, it just looked that way with no historical setup. (y)

Direct recommendation from Dave...and it's "more affordable"...why entertain any other advice?

Auto-Rx stopped a lifter tick in my 4.6 Ford modular engine in just a bit over 500 miles. This was somewhere around 2007, I think!

Surely you jest. You have a special engine that is further tuned, and you wonder if there may be "overkill" or "I don't mind spending extra...if the performance supports the cost"? If it were mine, I'd be using the best darn oil I could get into it...price would not be an issue. Whether an oil...

Great to see this good UOA on a fine engine in a fine car. I bought this car in 2025 form. It's the final year of the simple 3.5 V6 FWD Lexus ES350 F-Sport Handling that they'll make. 2026 sees big changes. My only complaint is the brakes are not great (compared to my Mini JCW that has bigger...

I did a run of PP Euro LX 0w30 in my B48. It held up well for 5000 miles, as expected. It's one of several good choices.

The last line said: "I intend to continue this OCI for another 10k miles and then sample again." I'd imagine the decision will be made to change or continue based upon that OCI analysis.

I've read most of this thread, but it's been over many days, and I don't remember it all. Forgive me if this has been brought up: Hybrid engines that do not run continuously must have a relatively low oil temperature. IF THAT IS TRUE, compare the viscosity of a 0w8 at that operating oil temp...

Do you go by what is written, or what someone says? Written word wins.

I ALWAYS put 0w-20 in my Toyota 2.5 Dynamic Force Engine. And I put 0w30 in my Lexus 3.5 engine. And 0w30 in my BMW B48 engine. Those two have 0w20 listed as the primary oil. Certainly doesn't hurt anything...

That's an acceptable amount of what I call "scharf" in the pleats. Enjoy a long engine life with that vehicle!

Yep. That prompted me to buy the last model with this engine: 2025 3.5 ES 350 F-Sport

If you want to be political, then your Opinion can hold the same weight as someone else's Opinion. However, Opinions and Facts are weighed very differently when it comes to Science. When you drop in to a group leaning toward Science acting as if your Opinion is as good as established and...

I had a 4.6 modular gas Ford engine that I left the Motorcraft filter on for 3 oil change intervals of 5000 miles. UOA's showed the "Insolubles" dropped each interval. I don't remember the first two reports, but the final interval (after 15,000 miles) I remember the Insolubles were reported as...

A 10 weight oil at room temp is thicker than a 60 weight oil at operating temp. The thought that engines can ONLY operate correctly with X weight oil means that engines can only operate correctly at a certain temperature. Engines operate with relatively thick oil every time they start up. So...

I had a motorcycle engine builder that recommended early high workloads to make sure the rings were seated well. He recommended doing this on a steep uphill followed by engine braking on the steep downhill. He thought the downhill engine braking vacuum was just as important as the high pressure...

German wife and German dog are probably above average. Liqui Moly...not so much. You are leaning in the correct direction with the Castrol. Valvoline would be fine as well. LM has a following due in part to marketing to European car repair shops. In VOAs and UOAs, it's nothing special that I've...