Join Date: Jun 2013
Location: West Grove, PA
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Personally, I'm a supporter of standards like DexOS. The problem is that if a product doesn't carry the official certification and they say that it "meets DexOS specifications", then you don't *really* know if it does or not - you have to take their word for it.
The whole purpose of a certification program like DexOS is that the product must pass a series of tests in order to get that certification. Does this cost money? Sure, it does. Does it increase the cost of the product? Yep. Does it ensure a certain quality level? YES!
Same thing as "Top Tier" gas. Yes, it adds cost, but it ensures a certain level of quality.
If a company is unwilling to obtain the certification, it makes you wonder. Amsoil is already one of the more expensive oils out there - I don't think their customers are buying the oil becuase it's cheap.
Personally, I wouldn't use an oil without the DexOS certification. You could run into hassled with warranty coverage, etc. In the end, they may approve warranty coverage, but you may have to fight them since it's not DexOS certified. I'm not saying the oil is *causing* the issues, but GM may give you a hard time becuase the oil you doesn't carry the DexOS label. It may at least delay warranrty coverage.
People also didn't believe that catch cans can void your warranty either - but they can and have... Right or wrong, it's just the way it is.
I'm not trying to convince anyone to use it or not, just saying why I think standards like DexOS are important and why I would make sure the oil is DexOS approved. Obviously, others are free to do what they wish. :-)