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You have their middle tier pic pictured, as you can see if you go to their website.
Signature is the only level I personally would run.
Signature > XL > OEM
The Wife had the oil changed in the SHO and they installed CAM2 engine oil. Anyone tried this oil and is it OK for the SHO ??
Many studies have shown that Castrol Edge Titanium is the best oil for 3.5l ecoboost. I have posting on another forum about cylinder missfire. I have not tried cam2 though. Amsoil signature ranks second. Even on amsoils own multi brand testing. Castrol could be had for 30-40$ a walmart for 6quarts and amsoil is usually around 60-70$ for an oil change. Id run the amsoil but in a pinch id run castrol. As i usually run castrol or royal purple in my other engines with no issues for edge titanium.
I actually only ran mobil 1 full syn in my sho, but i was pushing 10k miles on the oil and running the engine hard. Probably is part of the reason my original 015 engine blew at 72k miles. On my 13 sho and 15 sho with a new engine i only run amsoil with 2500-3000 mile oil changes. Oil comes out still looking like oil as with 10k mile changes on mobil one it would look like black water
I just switched to Castrol Edge in my ST. My SHO has 200 miles before its next oil change and will get Castrol Edge as well.
It is cheap at wallyworld. I use it in my gm l35 4.3l. Got a new engine 10 years ago in my travel van. Oil change with ac delco filter and castrol edge titanium. Got 228k on it now. Yea i been all over usa and canada with it many times since. Tore engine apart. Looked as good as when i ordered the short block and assembled it. That oil got my respect and i slam gears high rpm in it all the time
I did and now I'm using Red Line !! Great oil !!
^^ where did you get this info that say that??, about the Red Line engine oil ? specifics ??
https://www.ecoboostperformanceforum.com/index.php/topic,9923.0.html
Here is a good place to start with research.
I never really understood timeframe on oil changes. Miles makes since but months. So if its new oil and its in the car for 3 months and the car was never ran. The oil is recommended to be changed? I understand if there is gas and crud in an old engine. What about oil shelf life. A new bottle of oil could have been bottled 3 years ago or on a shelf for 2 years. I overthink things most of the time
So my bottle of valvoline from 1989 in my garage thats never been opened is no good? Aint the oil in the earth no good because its been down there for too long. Refinery aint making the oil new