I just ran across Amsoil's new line of racing oil and it's exactly what I've been asking them to make for a year now. Up until now I've only run their oil in my TL which happens to be their diesel VII less 30wt.
I'm a big fan of oils with no VIIs (viscosity index improvers) and these oils have no VIIs. It is much less likely to shear under high loads and temps and more likely to retain it's viscosity over it's lifespan. I feel this is especially important in our torque monster cars. The fact that the 30wt has a HTHS of 3.6 shows it's pretty robust. Redline is another product and the only other one I know of that uses no VIIs in their racing oils.
Where the Amsoil scores with me is the fact that it does have some detergents and more importantly, a TBN of 8 which means unlike many racing oils, this one should be able to go 5,000+ miles.
And just what we need, it's absolutely loaded with zinc for our flat tappet cams. No need to add the zinc separately.
So basically:
It's VII-less so it's a straight weight that naturally flows well enough when cold to be called a 10-30 and 15-50.
It has tons of Zinc for flat tappets.
It has some detergents and friction modifiers.
It has has a TBN of 8 which is pretty high for a race oil meaning you can run it for a normal length interval.
They're a little on the heavy side for the respective viscosities with an 11.5 KV@100C for the 30 and 17.5 for the 50wt.
There are other racing and street oils that have these properties but this is the first I've seen to combine all of them in one oil. There's also a 20wt but I don't plan on trying that one. Maybe I get too excited over oil lol.
I'm a big fan of oils with no VIIs (viscosity index improvers) and these oils have no VIIs. It is much less likely to shear under high loads and temps and more likely to retain it's viscosity over it's lifespan. I feel this is especially important in our torque monster cars. The fact that the 30wt has a HTHS of 3.6 shows it's pretty robust. Redline is another product and the only other one I know of that uses no VIIs in their racing oils.
Where the Amsoil scores with me is the fact that it does have some detergents and more importantly, a TBN of 8 which means unlike many racing oils, this one should be able to go 5,000+ miles.
And just what we need, it's absolutely loaded with zinc for our flat tappet cams. No need to add the zinc separately.
So basically:
It's VII-less so it's a straight weight that naturally flows well enough when cold to be called a 10-30 and 15-50.
It has tons of Zinc for flat tappets.
It has some detergents and friction modifiers.
It has has a TBN of 8 which is pretty high for a race oil meaning you can run it for a normal length interval.
They're a little on the heavy side for the respective viscosities with an 11.5 KV@100C for the 30 and 17.5 for the 50wt.
There are other racing and street oils that have these properties but this is the first I've seen to combine all of them in one oil. There's also a 20wt but I don't plan on trying that one. Maybe I get too excited over oil lol.
