T-Stat vs Oil Viscosity/weight

[Silver_Serpent]

Simple question:

Are you supposed to switch from the recommended 5w-50 oil when you do a t-stat change to the 170 degree t-stat?

I wasnt planning on it, but the paper that came with the t-stat seems to recommend it.

What does everyone do? Makes sense that the lower temps could lead to a shift in viscosity.

Car is a 2012 GT500

 

[enormous]

There is some good reading on oil here and suggestions on oil when using a 170 T stat.

http://www.svtperformance.com/forums/svt-shelby-gt500-150/787413-official-uoa-thread-oil-poll.html

 

[NightRide]

Yep, 10w30 for drag and street brawls and if you road course the car at all 10w40, amsoil is my choice.

 

[zporta]

I run amsoil 10w-30 with my 170*

 

[2011 gtcs]

I run 10-40 in the summer and 10-30 in the winter with the 170 t stat

 

[Silver_Serpent]

I got my t-stat in. I have 8 qts of 5w-50 oil. Is it safe to use? Is it going to result in too high of a viscosity and therefore pressure? Anyone running a 170 t-stat and 5w-50?

Thanks

 

[Willie]

....Anyone running a 170 t-stat and 5w-50?

I use Castrol 5w-50 since Day #2 back in 2007. I'm also probably the ONLY one here that runs a 160 t-stat from about Day #60. That was over five years ago.