Oil selection tool
- MOBIPOL
Asortyment
Przemysłowe środki smarne
- Gas Engine Oils
Oil for Gas Engines
Maximum protection for stationary engines powered by natural gas, biogas, and other gaseous fuels in energy generation systems

Extended Life
Extended intervals between oil changes
Wear Protection
Maximum protection of engine components
Thermal Stability
Resistance to high temperatures
Low Ash Content
Minimization of deposits in the combustion chamber

Challenges in Industrial Gas Engines
Specific requirements of gas-powered engines demand specialized oils
Stationary gas engines operating continuously in power plants and cogeneration installations are exposed to extreme conditions. High temperatures, aggressive fuel components, and long operating periods require specially formulated lubricants.
Common Problems in Gas Engine Operation
Our Solutions
Choose the optimal oil for your application
Mineral Oils Mobil Pegasus
A proven series of mineral oils for four-stroke gas engines. Mobil Pegasus 1 is ideally suited for engines powered by natural gas or biogas, providing optimal protection and extended oil change intervals.
Specialized Biogas Oils
The Mobil Pegasus series also includes special oils developed for engines powered by biogas and landfill gas. Increased alkaline reserve effectively neutralizes aggressive fuel components.
Premium Synthetic Solutions
Mobil Pegasus 1 is an advanced synthetic engine oil for the most demanding applications. Exceptional thermal stability and extended life in modern high-power engines powered by natural gas.
Need advice? Contact an expert!
How Mobil Solves Gas Engine Problems
Oxidation and stability
Advanced additives providing excellent oxidation resistance and thermal stability
Corrosion protection
Optimal alkaline reserve (TBN) to neutralize acids
Deposit control
Specialist cleaning and dispersing additives keep the engine clean
Extended oil change intervals
Formula ensuring long oil life in the most demanding conditions
Wear protection
Effective protection for all engine components

Why choose Mobil products?
Production reliability
Stable operation without unplanned downtime thanks to extended intervals between oil changes
Compliance with regulations
Certificates and approvals required during engine manufacturer audits
Actual savings
Lower fuel consumption and less frequent changes result in real operating cost reduction
Comprehensive support
Analysis of oil and coolant samples, product selection, and system optimization as part of the collaboration, boroscopy and optimization of replacement intervals
Not sure which lubricant is best for your machine?
Contact our expert! We are happy to help you find the perfect solution.
Proven solutions for every industry
Our portfolio includes products for all industry sectors requiring reliable gas engine operation.
Power Plants and CHP Plants
Stationary gas engines in energy and heat generation installations require oils that provide long periods of failure-free operation. Mobil Pegasus guarantees protection in continuous operation mode at full capacity.
Cogeneration Installations (CHP)
Combined heat and power generation systems operate in demanding thermal conditions. Mobil oils provide thermal stability and protection against degradation at high temperatures.
Agricultural and Municipal Biogas Plants
Engines powered by biogas are exposed to aggressive fuel components, including hydrogen sulfide and siloxanes. Mobil Pegasus oils are specifically developed to neutralize these threats.
Sewage Treatment Plants
Utilizing biogas from fermentation processes requires oils resistant to contamination. Our products provide protection against corrosion and deposits in harsh conditions.
Waste Landfills
Landfill gas contains aggressive chemical compounds that require specialized protection. Mobil oils effectively neutralize acids and prevent deposit formation.
Mining Industry
Engines powered by mining gas (methane from coal seams) operate in extreme conditions. Our oils provide reliable protection and long life in the most challenging environments.
Need expertise in selection?
Our engineers will help optimize your system for performance and cost.
Three Steps to Success
Installation audit
We assess the engine type, fuel, and operating conditions
Solution proposal
We recommend the optimal oil for your application
Operation monitoring
Regular oil testing allows us to predict and prevent problems
Frequently Asked Questions (FAQ)
What is the difference between gas engine oils and standard engine oils?
Gas engine oils have specially developed additive packages ensuring resistance to nitration, deposit control, and appropriate ash content tailored to the type of gas being burned.
How often should oil be changed in a gas engine powered by biogas?
Oil change intervals depend on biogas quality and engine manufacturer's recommendations, as well as analysis results. We recommend regular oil analyses to determine optimal replacement intervals, which may range from 200 to 2000 operating hours depending on gas quality.
Can I use the same oil for engines powered by natural gas and biogas?
In circulating systems every 12-24 months, with manual lubrication, refill regularly. Frequency depends on machine workload and environmental cleanliness.
What are the most important oil parameters for my four-stroke gas engine?
Key parameters include viscosity grade (typically SAE 40), ash level (low/medium ash), total base number (TBN), and oxidation resistance. All must comply with the engine manufacturer's recommendations.
How to monitor oil condition in stationary gas engines?
We recommend regular oil sampling for laboratory analysis. We monitor viscosity, TBN, oxidation, nitration, and metal content to optimize replacement intervals and detect problems.
Are Mobil synthetic oils better than mineral oils for gas engines?
Synthetic oils like Mobil Pegasus 1 offer extended life, better thermal stability, and protection in extreme conditions. They are particularly recommended for modern high-power engines and applications requiring maximum reliability.
Need more knowledge?
Visit our guide, where you’ll find detailed articles, tips, and case studies.
Start optimizing today
Don’t wait until oil issues affect your engines’ performance. Contact us today for professional advice on selecting the optimal Mobil oil for your installation. We ensure prompt delivery from our warehouse and comprehensive technical support.

