Technical Specifications
| Property | Unit | Typical Value | Test Method |
|---|---|---|---|
| Appearance | — | Brownish-red viscous liquid | — |
| Density at 20°C | kg/m³ | 998 | ASTM D4052 |
| Viscosity at 100°C | mm²/s | 125 | ASTM D445 |
| Flash Point | °C | 195 | ASTM D93 |
| TBN | mgKOH/g | 117.5 | ASTM D2896 |
| Zinc | % | 1.11 | ASTM D4951 |
| Nitrogen | % | 0.73 | ASTM D3228 |
| Molybdenum | % | 0.17 | ASTM D4951 |
| Moisture Content | % | 0.03 | ASTM D95 |
| Mechanical Impurities | % | 0.03 | ASTM D473 |
* Typical values from batch production. Batch-specific COA available on request.
Technical content reviewed by the CheMost additives team · Specifications last reviewed
Application Data
Recommended Treat Rate
3.0–6.8 wt% depending on target API service level
What Is a Universal Engine Oil Additive Package?
CheMost PA9944G is a universal engine oil additive package — a single detergent-inhibitor (DI) concentrate formulated to serve both gasoline and diesel crankcase oils, rather than a separate package for each. It is a brownish-red viscous liquid with a Total Base Number (TBN) of 117.5 mgKOH/g, 1.11% zinc, 0.73% nitrogen and 0.17% molybdenum.
Dual-purpose gasoline/diesel packages are an established formulation approach, with finished oils using paired service categories such as SF/CC, SF/CD and SG/CD. A universal package targets the requirements that gasoline and diesel service have in common, so it is chosen for breadth of coverage rather than for peak performance in a single duty.
PA9944G is supplied as a concentrate. It carries the detergent, dispersant, antioxidant and antiwear functions of the finished oil; the blender adds the remaining functional additives separately (see Formulating With PA9944G below).
How PA9944G Works — Four Functions in One Concentrate
Acid neutralisation
A TBN of 117.5 mgKOH/g (ASTM D2896) provides the alkaline reserve that neutralises acidic combustion and oxidation by-products. At a 6.8% treat rate this contributes roughly 8.0 mgKOH/g to the finished oil.
Deposit and sludge control
0.73% nitrogen (ASTM D3228) is consistent with nitrogen-containing ashless dispersant chemistry, which is commonly used to keep soot and oxidation products suspended so they cannot agglomerate into sludge or varnish. Gasoline service in particular is limited by low-temperature sludge.
Antiwear protection
1.11% zinc (ASTM D4951) is consistent with zinc-containing antiwear chemistry such as ZDDP, which is commonly associated with sacrificial tribofilm formation on loaded surfaces in crankcase oils.
Molybdenum contribution
At 0.17% molybdenum (ASTM D4951), the supplier data sheet attributes the package’s stable and excellent antiwear properties to its high molybdenum level; at 6.8% treat it puts about 116 ppm Mo into the finished oil.
Which API Service Levels PA9944G Covers
PA9944G is built for API SL/CF/CF-4 and earlier. We state this plainly rather than leaving it vague: these are mature API service categories with mixed current status. API lists SL as Current for 2004 and older automotive engines and SJ as Current for 2001 and older automotive engines, while SG, SF, CF-4, CF, CD and CC are Obsolete. PA9944G does not cover API SQ, SP, SN, ILSAC GF-7/GF-6, CK-4 or FA-4, and it is not offered as doing so.
That is an older-fleet market position. API’s own Service descriptions say “For 2004 and older automotive engines” for SL and “For 2001 and older automotive engines” for SJ. PA9944G is intended for oils serving older vehicles, agricultural and stationary equipment, and general-purpose workshop fills.
Service-category performance is a property of the fully formulated finished oil, not of an additive package on its own. PA9944G is used in formulations targeting the levels above; final qualification depends on your base oil, viscosity modifier and complete additive slate.
PA9944G Applications in Engine Oil Formulation
Multigrade gasoline engine oils
Passenger-car and light-commercial oils targeting API SL, SJ, SG or SF. Blend with a viscosity index improver to reach the required SAE grade.
Diesel engine oils
Naturally aspirated and turbocharged diesel oils targeting API CF-4, CF, CD or CC — including mixed-fleet workshop fills where one oil must serve both fuel types.
Mixed-fleet / universal oils
The primary case for this package: a single blend covering both gasoline and diesel service, which removes one DI inventory line and simplifies the blending schedule.
Wide viscosity coverage
Per the data sheet, adding a viscosity index improver lets one PA9944G-based formulation span a range of multigrade viscosity grades.
PA9944G Treat Rate by API Service Level
The data sheet specifies a treat rate for each target service level. These are supplier-published figures for this grade, not derived estimates:
| Target API level | Treat rate | TBN contributed* | Zn contributed* | Mo contributed* |
|---|---|---|---|---|
| SL / CF / CF-4 | 6.8% | 8.0 mgKOH/g | 755 ppm | 116 ppm |
| SJ / CF | 5.45% | 6.4 mgKOH/g | 605 ppm | 93 ppm |
| SG / CD | 4.9% | 5.8 mgKOH/g | 544 ppm | 83 ppm |
| SF / CC | 3.0% | 3.5 mgKOH/g | 333 ppm | 51 ppm |
Treat rate tracks service category, and PA9944G’s own four tiers show it directly: 3.0% for SF/CC, 4.9% for SG/CD, 5.45% for SJ/CF and 6.8% for API SL/CF/CF-4 — the more demanding the category, the more package the finished oil needs. All four figures are from the supplier data sheet.
Treat rate is a starting point tied to your base oil and the rest of your additive slate. The data sheet notes that suitability varies with the base oil used — confirm your formulation with our technical team before production blending.
Formulating With PA9944G — What You Still Need to Add
PA9944G is a DI package, not a fully formulated additive system. The data sheet states that additional functional additives — such as defoamer additives, pour point depressants, thickening agents or viscosity index improvers — need to be added during use. The exact selection depends on the base oil and target grade. Being clear about that boundary matters more than a longer feature list:
Defoamer
The data sheet names defoamer additives as one example of an additional functional additive. Where foam control is needed, see PDMS silicone defoamer or our silicone-free option for systems sensitive to silicone carry-over.
Pour point depressant
The data sheet names pour point depressants as one option; whether one is needed depends on the base oil and low-temperature target. See polymethacrylate (PMA) pour point depressant.
Viscosity index improver
The data sheet names viscosity index improvers as one option; one may be selected where the target grade calls for it. See EPM or liquid OCP — the choice affects shear stability and the final VI.
Thickener, where specified
The data sheet names thickening agents as one option; whether one is used depends on the viscosity grade being built.
Browse the full range on the engine oil additive packages hub, or the individual additive components catalogue.
Documentation, Qualification & Regulatory Support
Regulatory documentation
REACH, TSCA and country-specific market registration documentation support available on request.
Third-party inspection
SGS / Intertek / BV pre-shipment inspection can be arranged on request.
Custom grades & packaging
Custom package variants and packaging formats can be discussed with our technical team.
Formulation support
Treat-rate calculation and base-oil compatibility guidance — the data sheet specifically recommends confirming matching suitability for your base oil.
COA, technical data sheet, SDS and certificate of origin are provided with every shipment. Request the full data sheet or a sample — enquiries are answered within 12 hours.
Packaging, Supply and Lead Time
Packaging
200 kg metal drum · 1000 kg IBC tank.
Storage
Dry, clean, well-ventilated warehouse. Maximum storage temperature 50°C; maximum blending temperature 70°C. Shelf life 36 months at ambient temperature.
Minimum order
One drum or one IBC — no minimum order value.
Incoterms & ports
FOB · CIF · EXW from all major Chinese ports.
Stocked and shipped worldwide, typical lead time 1–15 days; 36-month shelf life; samples and quotations answered within 12 hours.
Frequently Asked Questions
What is a universal engine oil additive package?
It is a single detergent-inhibitor concentrate formulated to serve both gasoline and diesel crankcase oils, instead of two separate packages. It carries the detergent, dispersant, antioxidant and antiwear functions; the blender selects any additional functional additives needed for the base oil and target grade, with the data sheet naming viscosity index improver, pour point depressant, thickener and defoamer as examples. The benefit is one DI inventory line covering both duties; the trade-off is that it targets what the two services have in common rather than optimising for either alone.
Which API service levels does PA9944G cover — are they current?
PA9944G targets API SL, SJ, SG and SF on the gasoline side and CF-4, CF, CD and CC on the diesel side. API lists SL and SJ as Current categories — SL for 2004 and older automotive engines, SJ for 2001 and older automotive engines — while SG, SF and all four diesel categories (CF-4, CF, CD and CC) are Obsolete. The package does not cover API SQ, SP, SN, ILSAC GF-7/GF-6, CK-4 or FA-4. It is intended for mature, older-fleet oils used in older vehicles, agricultural and stationary equipment, and general-purpose workshop fills.
How much PA9944G is needed for an API SL/CF oil?
6.8% by weight of the finished oil for API SL/CF/CF-4, per the supplier data sheet. Lower levels apply to lower service categories: 5.45% for SJ/CF, 4.9% for SG/CD and 3.0% for SF/CC. At 6.8% the package contributes roughly 8.0 mgKOH/g TBN, 755 ppm zinc and 116 ppm molybdenum to the finished oil.
What else has to be added besides PA9944G?
The data sheet states that additional functional additives — such as defoamer additives, pour point depressants, thickening agents or viscosity index improvers — need to be added during use. Which of them you need depends on your base oil and target grade. PA9944G is a DI package, not a fully formulated additive system.
Can one package really serve both gasoline and diesel engine oils?
Yes, within the service levels it is designed for. Oils carrying both a “C” and an “S” category do exist — API’s own branding guide gives API SERVICE CK-4/SP as an example — but that is a different formulation target from this package. PA9944G itself is not formulated for the following newer categories: it does not cover API SQ, SP, SN, ILSAC GF-7/GF-6, CK-4 or FA-4.