Thanks to a very unfriendly welcome to the forum: https:/
I have been forced to repost this topic, hope this information is helpful to provide a real life experience:
I bought a 2011 Aveo in 2010. The car is soon to be 10 years old, and here is my experience. Chevy dealer I bought it from told me several times when I bought it to use DEXOS only oil or warranty would be voided.
My dealer provided free oil changes as part of a promo for the first two years I owned the car, after that I've been doing my own oil changes. So, for the past 7+ years I've been changing my own oil with conventional spec Walmart oil for super cheap. I buy Supertech conventional oil (not synthetic) and I change it at about a 5k (8k kilometers) interval give or take. *PLEASE NOTE: I am not advocating for Supertech or any Walmart brand, I am using it as example, as any standard oil brand should work fine IMO.
Just want to report to anyone interested, the car is a decade old, I drive a lot and recently rolled over 400,000km (that's over 260,000 miles for Americans reading) just within the past month. Engine runs fine. Its got some other issues, but oil and the engine aren't one of them.
DEXOS as a requirement is a scam. Its a way for GM to make money by demanding royalties from oil companies and to encourage drivers to pay more for oil changes than necessary. These synthetics cost $80 a pop at most shops here in Ontario (that's Canadian, I'm not sure the price in the US), and for me to go to Walmart and get a low cost conventional oil and filter its barely $25. You do the math, I do 5 changes a year and I'm saving hundreds of dollars a year.
So there is no need to be afraid. If DEXOS were really required, the engine would have blown by now. I don't even use synthetic, I use conventional same spec and change it regularly. Regular changing is more important than any other factor as long as its the same spec. I have never waited more than 10,000km between changes, and I often change it between 7-8k (under 5,000 miles).
FURTHERMORE, there are federal laws that prohibit manufacturers from voiding warranties for not using their oil branding. The dealer and manufacturer might try and refuse warranty work, but all you do is call a lawyer and they'll bend your way before you even have to file suit. Trust me.
Just wanted to add this for discussion and to have those who are curious use it as a reference. The fear about DEXOS and other manufacturer branded oils is, in my view, just a money making enterprise for the auto manufacturers and consumers should be aware. Based on my personal experience, it would appear that any engine problems you get are unrelated to whether you use DEXOS products or not. So if others out there are interested in saving, you can at least have your fear abated. I think 10 years and 400,000km is enough of a test to prove the point. www.bobistheoilguy.com/ forums/ ubbthreads.php/ topics/ 5325130#Post5325130
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