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Premium Member
2008 Vista Blue with White Stripes
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Discussion Starter #1
I've been needing to get around to doing an oil change on my car, but have had other things cropping up of a larger importance. But I feel like I should be able to get to it in the next week or so.

I know I can order it, but I first figured I'd check to see if anyone sells it at all locally as I'd prefer to go that route if at all possible.

I did talk to Kurtdog a few weeks ago and he mentioned he had 20W-50 in it when he sold it to me (kinda surprised me since it says 5W-50 on the fill cap), so I did want to also confirm plenty of people here run that weight as well (I am NOT trying to open up a huge debate about it. One search I did found up over 5 pages worth of threads debating every possible thing about oil). I trust his opinion implicitly, but was hoping to confirm it wasnt a typo on his end when he sent me the text.

Thanks
 

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2013 Shelby GT500 Coupe, Triple Black
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1,789 Posts
I did talk to Kurtdog a few weeks ago and he mentioned he had 20W-50 in it when he sold it to me (kinda surprised me since it says 5W-50 on the fill cap), so I did want to also confirm plenty of people here run that weight as well (I am NOT trying to open up a huge debate about it. One search I did found up over 5 pages worth of threads debating every possible thing about oil). I trust his opinion implicitly, but was hoping to confirm it wasnt a typo on his end when he sent me the text.
I can't speak to what Kurtdog ran for oil or why he ran it.

I realize offering an opinion on oil is like offering one on politics or religion but, you asked for it... SVT recommended Motorcraft 5W-50 Full Synthetic Oil for our cars. I doubt anyone will have problems sticking with that, and a good quality filter, changed regularly. As informed enthusiasts, however, some of us concluded there are better choices available. In researching what I wanted to use, I focused on base stocks, viscosities (initial and sheared), and additive packages. What I learned led me to conclude Amsoil 0W-40 is the best choice for my car. (Amsoil's Signature Series base stocks and additive packages are superior to Motorcraft's, and the sheared viscosity of their 0W-40 is pretty close to that of Motorcraft 5W-50.) Oil analysis with every change leaves me satisfied I made the right choice.

Since Amsoil's Signature Series oils shear less than Motorcraft's, I'd guess your 20W-50 is a little thicker than SVT engineers would prefer, especially on start-up, when most engine wear occurs. (All other things being equal, 0W-XX oil SHOULD provide better wear protection than heavier weight oils at startup because they flow better.)
 

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2008 Vista Blue with White Stripes
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661 Posts
Discussion Starter #3
I appreciate your insight. Thank you (y)
 

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2013 Shelby GT500 performance white
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852 Posts
I run Amsoil 5W-50. All you have to do is go to Amsoil’s website, sign up for a free three or six month membership, and you get great deals on their oil with free shipping.
 

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2010 Grabber Blue Gt500
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1,562 Posts
Same here, a couple of club members have done that and we purchase our oil from them. 5-50 Signature Series I run and the other two Shelby guys run in our club!
 
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