I know there's countless oil threads. Seems the consensus on svtperformance runs Amsoil. I've been running it exclusively for a while now. The only reason I'm asking is because of the 10w40 vs the recommended 5w20. I know the motorcraft shears to a 40w after 1k miles or so. Read all the info I could as I'm sure many of you guys have as well. So how many of you guys switched to Amsoil 10w40?
How many guys running Amsoil?
- Thread starter Turbosixx
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The recommendation is 5W-50 not 20 and many including myself run the Amsoil 40w
I am running the Amsoil 10w-50 with a 170 thermostat.
Oh boy, another thread in which to debate the religion of oil, the importance of Motocraft's so-called "B-spec", and its potential warranty impacts... :nonono:
Lots of good info here, OP, including a long-term poll similar to yours.
FWIW, based on what I read there and number of other places, I plan to convert my car from Mobil 1 (5W-50) to Amsoil (10W-40) at its next change.
Lots of good info here, OP, including a long-term poll similar to yours.
FWIW, based on what I read there and number of other places, I plan to convert my car from Mobil 1 (5W-50) to Amsoil (10W-40) at its next change.
I'm running Amisoil 10W40
My head was spinning from all the oil threads, I figured I'd get a more current poll.
It's all good. I just hate the way most oil-related discussions seem to devolve into protracted debates about esoteric specifications and warranty worries.
I wish you the best of luck with your decision which, in the end, should be based on what you're comfortable with for your car and not who casts the most aspersions about what others have decided is right for them/theirs.
I know what you mean. I hate to be "that guy". If Amsoil had 5w50 oil I wouldn't hesitate to run it.
10W 30 with a 170 stat here
I switched to Amsoil 10w40 at 2000 miles, then ran her at the strip the same night 
-J
-J
The "B spec" is so five minutes ago - the "C spec" has been released by Ford and all of our engines will fail immediately if we don't switch to C-spec oil after Ford starts calling for it in 2015. Of course, for all the guys that switched to Amsoil, their engines will run forever because they're off the Ford spec treadmill. YMMV.
10w30 here with 170 t stat also
I would like to ask since a lot of you have the 170 Tstat upgrade, did you have to tune for the switch and what noticeable gains did you see?
This is my plan after the E85 conversion is done.
Are your upgrades done yet? Looking forward to seeing the results.
-J
Another Amsoil 10w40 user here. I run Amsoil in my GT500, Raptor, motorcycles, ATV, Skidsteer, excavator, tractor, lawn mower, etc. If it has a motor it probably has Amsoil in it.....
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