strange how we almost never hear about a lube failuer when the correct rated oil is used.. no matter brand
I'll side with both views.
Grammatically speaking, Soundguy has a point. When he says "correct", then the 10w30 just cited does not fall into that category. Ergo, the engines would not have been allegedly damaged.
Foxtrot08's example is a good example of critical information that I watch for. Back to Justin's original question, this alleged problem with bulk oil should/would be an eye opener for many people. Maybe less so on TBN here, maybe not.
If the equipment manual calls for 10w30 and the owner takes it to a shop that is in good faith buying 10w30 from the distributor, Foxtrot's example illustrates well how badly things can still go wrong.
Taking a car in for an oil change, I'd say even many TBN'ers would not be closely questioning the oil certification levels on bulk oil. Even if they did, they likely would not hear any red flags in the example Ft8 cited.
The really scary part of this simple example is that most manufacturers of road vehicles have created an explosion of motor oil (amongst many other fluid) certification requirements in the last 5 years. Joe six Pack might remember SM, likely not 123.432.3647gx2 (nor me, for that matter).
Both of you guys raise important but different points concerning Justin's original question. These viewpoints actually bookend the overall concern quite well.
Rgds, D.
