Here’s the skinny: 99 Volvo S70 T5 (high pressure turbo). Ran GC 0W-30 from 65261-70609 miles (5348 miles on oil). Used 6 ounces of Lube Control on initial fill and 2 ounces each 1000 miles thereafter. Added ¾ quart make up oil after 1000 mile trip. Used Fuel Power at nearly every fill up. Air filter was a K&N. Oil filter was a Mann. First number is current GC analysis. Second number is previous analyses with Amsoil ATM 10W-30 and same Lube Control/Fuel Power strategy. I performed an Auto RX cleaning in between these two tests. Both analyses were conducted by Schaeffers.
Cu 4 5
Fe 11 7
Cr 0 0
Al 1 2
Pb 1 0
Mo 11 20
P 784 991
Zn 873 1094
Mn 112 677
Ca 2555 2021
Antifreeze 0 0
Fuel N N
H20 0 0
Si 1 1
Vis 10.9 12.51
S 6 27
Oxi 6 0
Nit 15 22
Take note of the Si. This was achieved with a K&N filter. I think the numbers stack up quite nicely and show what a value this GC is when you can get it for $4. The motor did eat about ¾ of a quart of oil, something that it never does with Amsoil, but it’s probably not a problem. Fe is a touch higher, but GC contains a few PPMs of Fe. At these wear rates, I’m going to have a hard time wearing this motor out!
Cu 4 5
Fe 11 7
Cr 0 0
Al 1 2
Pb 1 0
Mo 11 20
P 784 991
Zn 873 1094
Mn 112 677
Ca 2555 2021
Antifreeze 0 0
Fuel N N
H20 0 0
Si 1 1
Vis 10.9 12.51
S 6 27
Oxi 6 0
Nit 15 22
Take note of the Si. This was achieved with a K&N filter. I think the numbers stack up quite nicely and show what a value this GC is when you can get it for $4. The motor did eat about ¾ of a quart of oil, something that it never does with Amsoil, but it’s probably not a problem. Fe is a touch higher, but GC contains a few PPMs of Fe. At these wear rates, I’m going to have a hard time wearing this motor out!