Hello,
Am new here and was looking for thresholds for LS based engines and to see if it is looking like rebuild time (I suspect it is). This engine is used in an offroad race car.
Brand of oil: Castrol GTX
Miles on oil: 150
Metals (ppm)
Iron (Fe) | 57
Chromium (Cr) | 4
Lead (Pb) | 852 (Note - race fuel is used in this engine so suspect this has skewed the ppm count)
Copper (Cu) | 56
Tin (Sn) | Aluminium (Al) | 45
Nickel (Ni) | Silver (Ag) | Titanium (Ti) | Vanadium (V) | Contaminants (ppm)
Silicon (Si) | 15
Sodium (Na) | 26
Potassium (K) | 1
Additives (ppm)
Magnesium (Mg) | 21
Calcium (Ca) | 2237
Barium (Ba) | Phosphorus (P) | 924
Zinc (Zn) | 991
Molybdenum (Mo) | 80
Boron (B) | 156
Contaminants Water (%) | Coolant No Physical Tests Viscosity (cSt 100C) 11.6 Physical / Chemical Base Number (mgKOH/g) 6.6
Based on what I have read it would appear the pistons, bearings, and just about everything else are starting to wear. The engine runs great but know they run best before they blow up.
Thanks in advance for any guidance or recommendations.
Am new here and was looking for thresholds for LS based engines and to see if it is looking like rebuild time (I suspect it is). This engine is used in an offroad race car.
Brand of oil: Castrol GTX
Miles on oil: 150
Metals (ppm)
Iron (Fe) | 57
Chromium (Cr) | 4
Lead (Pb) | 852 (Note - race fuel is used in this engine so suspect this has skewed the ppm count)
Copper (Cu) | 56
Tin (Sn) | Aluminium (Al) | 45
Nickel (Ni) | Silver (Ag) | Titanium (Ti) | Vanadium (V) | Contaminants (ppm)
Silicon (Si) | 15
Sodium (Na) | 26
Potassium (K) | 1
Additives (ppm)
Magnesium (Mg) | 21
Calcium (Ca) | 2237
Barium (Ba) | Phosphorus (P) | 924
Zinc (Zn) | 991
Molybdenum (Mo) | 80
Boron (B) | 156
Contaminants Water (%) | Coolant No Physical Tests Viscosity (cSt 100C) 11.6 Physical / Chemical Base Number (mgKOH/g) 6.6
Based on what I have read it would appear the pistons, bearings, and just about everything else are starting to wear. The engine runs great but know they run best before they blow up.
Last edited: