Applications Applications Applications Applications
Lube Additives for Engine Oil
Overview:
Combustion-driven environments expose lubricants to high temperatures, fuel/soot contamination, and catalytic surfaces. Without robust additive systems, oxidation, sludge/varnish formation, wear, and acid build-up quickly compromise engine durability and fuel economy.
Why an additive package is required:
- Control oxidation and nitration at elevated bulk and ring-zone temperatures to prevent viscosity increase and varnish.
- Disperse soot and insolubles to avoid sludge, ring sticking, and filter plugging.
- Provide boundary protection (cam/follower, rings, bearings) under mixed/boundary regimes, including start–stop and high-load events.
- Protect non-ferrous metals and aftertreatment (copper passivation, catalyst compatibility, low-SAPS where required).
Typical additive families employed:
Antioxidants (amine/phenolic), AW/EP (e.g., ZDDP within phosphorus limits), detergents (overbased sulfonates/phenates), dispersants (succinimide/ester), friction modifiers (organic molybdenum/OFMs), anti-foam, corrosion/metal deactivators (triazoles), pour point depressants and VI improvers as needed.
Indicative performance tests:
Noack volatility (ASTM D5800), HTHS viscosity (ASTM D4683), CCS/MRV (ASTM D5293/D4684), TEOST (ASTM D6335), copper corrosion (ASTM D130), foam (ASTM D892), RPVOT (ASTM D2272) for oxidation screening, TBN/TAN (ASTM D2896/D664).
Recommended PX Products
|
Product
|
Function
|
Dosage
|
|---|---|---|
|
PX 3823
|
Dispersant/Detergent
|
Dosage not specified
|
|
PX 3841
|
Anti-foamant
|
0.05 – 0.30
|
|
PX 3849
|
Extreme Pressure/Antiwear
|
0.5 – 1.0 Marine
|
|
PX 3847
|
Extreme Pressure/Antiwear
|
0.5 – 1.0 Marine
|
|
PX 3822
|
Dispersant Detergent
|
2.0 – 10.0
|
|
PX 4005
|
Dispersant
|
5.0 – 15.0
|
|
PX 4006
|
Dispersant + Lubricity
|
2.0 – 15.0
|
Our consultants are ready to help you maximize performance with the right catalyst and performance additives solution.