Originally Posted By: RedOakRanch
My experience shows Amsoil to be the gold standard for extended drain. My UOA at 14k recommended I try 16k next time. I don't see many other oils holding up that well. I have used Dino and now GC since then so I'm not fanatic over it or anything. GM would have to prove the oil on the sump didn't meet their spec you don't have to prove it did. Paying to be on the list isn't a requirement of meeting the spec. How many engines die from the a bad oil spec anyway? None. Only from running out or not changing within a recommended time.
M1 EP is easily on par with SSO if you look at the uoa posted here,and to be honest even though I'm not a fan of mobil I do trust their 15000 mile guarantee.
I've not yet seen a single uoa of Amsoil SSO that has gone the 25000 miles they advertise.
Though their diesel oils show fantastic uoa results with extended drains.
I used to use Amsoil exclusively and I like the company and the products however costs is the issue for me b
Not not interested in doing uoa. And a uoa costs as much as an oil change. For me to run 25000 miles I'd have to get uoa done which is an added cost. And what if that 15 dollar a quart Amsoil is spent at 15000 miles? Then the added expenditure end up being more costly than the oils I currently use for 10000 miles.
I like Amsoil. I just don't like the extra work I have to do to use it and capitalize on their extended drain.
For me it's cheaper to run 10000 mile intervals on jugs I acquire for 26 bucks. My total is under 35 bucks every 10000 miles including filter.
To use Amsoil for 25000 miles it would cost me 90 bucks in oil,60 bucks in uoa and if the oil is spent prior to 25000 miles Then what.
150 bucks for a max of 25000 miles. Or 30000 miles for 105 bucks.
No brainer.
My experience shows Amsoil to be the gold standard for extended drain. My UOA at 14k recommended I try 16k next time. I don't see many other oils holding up that well. I have used Dino and now GC since then so I'm not fanatic over it or anything. GM would have to prove the oil on the sump didn't meet their spec you don't have to prove it did. Paying to be on the list isn't a requirement of meeting the spec. How many engines die from the a bad oil spec anyway? None. Only from running out or not changing within a recommended time.
M1 EP is easily on par with SSO if you look at the uoa posted here,and to be honest even though I'm not a fan of mobil I do trust their 15000 mile guarantee.
I've not yet seen a single uoa of Amsoil SSO that has gone the 25000 miles they advertise.
Though their diesel oils show fantastic uoa results with extended drains.
I used to use Amsoil exclusively and I like the company and the products however costs is the issue for me b
Not not interested in doing uoa. And a uoa costs as much as an oil change. For me to run 25000 miles I'd have to get uoa done which is an added cost. And what if that 15 dollar a quart Amsoil is spent at 15000 miles? Then the added expenditure end up being more costly than the oils I currently use for 10000 miles.
I like Amsoil. I just don't like the extra work I have to do to use it and capitalize on their extended drain.
For me it's cheaper to run 10000 mile intervals on jugs I acquire for 26 bucks. My total is under 35 bucks every 10000 miles including filter.
To use Amsoil for 25000 miles it would cost me 90 bucks in oil,60 bucks in uoa and if the oil is spent prior to 25000 miles Then what.
150 bucks for a max of 25000 miles. Or 30000 miles for 105 bucks.
No brainer.