Lubricants, Sealants, and Adhesives
Chapter 3. Lubricants, Sealants, and Adhesives
3-1. Engine Oil Specifications
WARNING
While it is unlikely any Mobil AV1 brand oil remains available,
in use, or in inventory, use of Mobil AV1 is prohibited from use
in Continental aircraft engines.
Lubricating oils qualified for use in Continental aviation gasoline (AvGas) engines are
required to meet Society of Automotive Engineers (SAE) specifications. SAE J1899 is the
specification for aircraft piston engine ashless-dispersant oil. SAE J1966 is the
specification for aircraft piston engine non-dispersant mineral oil.
Lubricating oil meeting these specifications is acceptable; proof of conformity is the
responsibility of the lubricant manufacturer.
Lubricating oil classified by North Atlantic Treaty Organization (NATO) or
Standardization Agreement (STANAG) as interchangeable with oils qualified under SAE
J1899 or SAE J1966 and assigned NATO codes O-123 or O-128 shall be considered
qualified.
The marketers listed in Table 3-1 have supplied data to Continental indicating the products
conform to one or more of the requirements above.
Continental recommended oil grades:
• Above 40°F ambient air, sea level SAE 50 or multi-viscosity
• Below 40°F ambient air, sea level SAE 30 or multi-viscosity
3-1.1. Oil Brand Selection
Reference: SIL19-04
CAUTION: Use the appropriate oil grade applicable to their specific
engine or product line and maintain a consistent oil brand to sustain
standard engine operations until after overhaul. Use only oil
specification approved by the engine Type Certificate Data Sheet.
Lubricant manufacturers produce multiple oil products which comply with specification
MHS-24; each containing proprietary formulations for straight weight and multiviscosity
oil grades. Operators choose the appropriate oil to service their engine based on
Instructions for Continued Airworthiness (ICAs), operating environment, viscosity, brand,
and personal preference. Switching oil brands before engine overhaul may result in higher
wear rates for lifters and cylinder components, even under normal operating conditions.
Analysis indicates consistent servicing with one brand of oil will result in fewer
maintenance events and more consistent oil analysis results. Continue using the same oil
brand throughout the service life of the engine. Do not change from an established “oil
type” (mineral oil, semi-synthetic oil), even within the selected brand, before engine
overhaul.
Standard Practice Maintenance Manual 3-1
1 Feb 2021 CHANGE 1
Lubricants, Sealants, and Adhesives
Table 3-1. Qualified SAE J1899 Ashless Dispersant Engine Oil
Supplier Brand
Castrol Aviator AD Oil
Air BP Lubricants
Castrol Aviator A Oil
ExxonMobil Aviation Exxon Elite
NYCO S.A. Turbonycoil 3570
Pennzoil Company Pennzoil® Aircraft Engine Oil
Phillips 66 Type A 100 AD, 120 AD
Phillips 66 Aviation
Phillips 66 Victory Aviation Oil 100AW
ConocoPhillips
Phillips 66 X/C Aviation Oil SAE 20W-50, SAE 25W-60
Aeroshell Oil, (Mineral) 65, 80, 100, 2F Anti-Corrosion Formula
Aeroshell Multi-grade Oil AD, 15W - 50
Shell Aviation
Aeroshell Oil W65, W80, W100
Aeroshell Oil W80 Plus, W100 Plus Anti Corrosion Formula
Total Aero DM 15W - 50
Total Lubricants
Total Aero XPD 80 (SAE 40), XPD 100 (SAE 50), XPD 120 (SAE 60)
Table 3-2. Qualified SAE J1966 Non-Dispersant Mineral Oil
Supplier Brand
Phillips 66 Aviation Phillips 66 Type M Aviation Oil 20W-50 (Multi-viscosity)
ConocoPhillips Phillips 66 Type M Aviation Oil 100W (Grade 50)
Aeroshell Oil 65 (Grade 30)
Aeroshell Oil 80 (Grade 40)
Shell Aviation
Aeroshell Oil 100 (Grade 50)
Aeroshell Oil 120 (Grade 60)
Total Aero DM 15W - 50
Total Lubricants Total Aero 80 (SAE 40)
Total Aero 100 (SAE 50)
Table 3-3. Break-in Oil
Type Equivalent Application
SAE J1966 Aviation Non-dispersant mineral oil for piston
aircraft engines
First 25 hours of engine operation or
MIL-C-6529 Type II Corrosion until oil consumption stabilizes
Fly-away oil
preventive mineral oil
NOTE: Mineral oil conforming to MIL-C-6529 Type II contains a
corrosion preventive additive and must not be used for more than 25
hours or six months, whichever occurs first. If oil consumption has not
stabilized in this time, drain the mineral oil, replace the oil filter and
replace the discarded mineral oil with SAE J1966 aviation oil.
Table 3-4. Preservative Oil
Type Equivalent Application
Grade 1 Oil, Non-Rust VCI-105 Temporary or Indefinite Storage.
MIL-PRF-46002
Motorstor Engine Protectant Sprayed in cylinders (Section 9)
3-2 Standard Practice Maintenance Manual
15 Sep 2019
