Amsoil 10W40 vs 5W50

[Seppelrator]

Which one of the amsoil signature oil is recommended for our GT500s?
The 5W50 or the 10W40?
Thanks

 

[evasive]

The 10w40. I've been running it for a while and the used oil analysis always comes back great.

 

[Black Cobra '99]

10w40 is recommended, 10w30 if you're running the 170 t-stat.

 

[MattR]

There is a huge oil thread and think they discuss it. Per am soil the 5w50 is the only oil they will stand behind in our engines.

 

[Stri8ed]

Im putting Amsoil 5W50 in mine tomorrow... Should be fine.

 

[Seppelrator]

I'm currently using the 10W40 but gonna install the 170 Tstat this week so would I be better off with the 5W30 or is 10w40 fine?
Sorry but it's really confusing

 

[Kenneth]

I was told 10W30 with the 170* thermostat.

 

[SID297]

I'm going to be testing the SS 0W-40 Amsoil. On paper it looks really robust. It'll be interesting to see how the UOAs come out.

 

[jenkins_1120]

10w30 with a 170 t stat. That's what I use. I've been running that the past 2 years and about 3 oil changes.

 

[Seppelrator]

Thanks for the help guys.
10W30 it is but one last question.
Dominator vs signature?
I only drive her in the summer and stored in winter. It's just a weekend fun car, maybe 1-2k miles a season but in wot quiet often on county roads.
I think the dominator is the better choice for me?

 

[Blk04L]

Im putting Amsoil 5W50 in mine tomorrow... Should be fine.

That's what I just did 2 weeks ago.

 

[hRnYg0aTw33d]

I just changed mine at 2k miles and went with the 10w40 like the oil thread suggested. I am running the stock T stat.

Side note, how often are you guys changing your oil and filter when using the Amsoil? I see the filter says 25k miles, however I would never consider even thinking of going that long for a filter. I usually change my fluids in my bike and my past cars every 3k regardless if it is synthetic or not.

Is that overkill with the Amsoil fluids?

 

[FordGT08]

I'm going to be testing the SS 0W-40 Amsoil. On paper it looks really robust. It'll be interesting to see how the UOAs come out.

That's what I went with in my car.

 

[Bravo gt 500]

I'm using 10w30 with 170 tstat. This was also recommend
Amsoil AZF 0W-40 Use this no matter what thermostat is in your engine and the car is used for street/drag use only.

 

[Kenneth]

Side note, how often are you guys changing your oil and filter when using the Amsoil? I see the filter says 25k miles, however I would never consider even thinking of going that long for a filter. I usually change my fluids in my bike and my past cars every 3k regardless if it is synthetic or not.

Is that overkill with the Amsoil fluids?

I change mine every 6 months usually 6000 miles on both my vehicles and home generator.

 

[Sirhc7897]

I'm using 10w30 with 170 tstat. This was also recommend
Amsoil AZF 0W-40 Use this no matter what thermostat is in your engine and the car is used for street/drag use only.

I have run the 5/50 the 10/40 and the 0/40...

I have been happiest so far with the 0/40 from a "sounds the engine makes" perspective...Of the 3 my engine has consistently run the "quietest" with it. I have no doubt all three do a fine job in regards to lubrication but the 0/40 certainly "sounds" the best...

 

[MattR]

I change mine at 10,000, that's back and forth to work or 6mo. When I ran mostly highway I went 20,000 and did a 10k filter change. Sold that car at 100k and it's still going strong now at 150k

 

[Seppelrator]

Ordered the Dominator 10W30.
I don't drive a lot and only for 6 month a year so I think it'll work fine for me

 

[NightRide]

I've been using 10w30 signature series for about 3 years with good reports using a 170 t stat as well. One oil change a year with about 5k miles each time.

 

[HISSMAN]

I've been using the 0W40 SS for a little while, and so far so good. I'm using it in my GT500 (170° t-stat), and I used it in my Evo as well as my 135i. Both needing a good oild for the turbo(s) bearings. Seem like good stuff.