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I worked as the laundry product line manager for North America's largest Institutional chemical company. Sodium hypochlorite, i.e., chlorine bleach, has a much shorter, practical shelf life than most people imagine. In a very competitive environment, we advertised our "bleach" at 7% chlorine...

All replies, brief and otherwise, have been relevant, helpful, and appreciated. I have to agree I'm probably over-thinking this topic (I'm told I excel at this). I did some google searching and found multiple references showing that both 0w-20 AND 5w30 are recommended BY TOYOTA for my...

Great points made by Hohn in the previous post #119! I previously recommended the video linked in post #4 of this thread. For those like me who are really interested in this viscosity subject, I’d like to add an additional video recommendation, here: It is by the same person as the previous...

Okay, fair enough, but can you guide me then towards a better, more scientific process? Again, my goal is to make the right oil VISCOSITY choice for maximum engine protection based on facts rather than opinion. I was thinking of the oil analysis showing me 1) how badly the oil has sheared...

Wow…as a long-time reader but first-time poster, in my debut week here I’ve already been promoted! A few days ago, I couldn’t even spell “Troll,” but today, I are one…uh-huh, uh-huh! Only in America can a newbie skyrocket to such lofty heights, LOL. Seriously, thanks for all the prompt and...

My 2022 Lexus ES350 calls for 0w – 20 oil in the 3.5L V6. The manual does say that if 0w – 20 is not available, 5w-20 may be substituted, but it must be replaced with 0w-20 “at the next regular oil change.” To protect my remaining warranty I continue using Pennzoil Ultra Platinum 0w-20, but I...