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Enhancing Engine Performance Through Oil Life Extension and Sustainable Practices

This document explores the necessity of regular oil changes and the benefits of extending engine oil life through effective monitoring and sampling techniques. It highlights the environmental implications of oil consumption and the issues surrounding used oil disposal. By implementing an oil life extension program, fleets can significantly reduce costs, enhance engine performance, and decrease environmental impact. Case studies illustrate successful applications of on-site oil testing and re-refining practices, emphasizing the importance of good baseline data and proper maintenance scheduling.

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Enhancing Engine Performance Through Oil Life Extension and Sustainable Practices

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  1. Unit 6Engine Oil Life Extension

  2. Baseline: “Prescribed” Oil Change Need-it-or-not changes based on: • Mileage • Calendar • Operating Time

  3. Environmental Concerns • 2.7 billion gallons of oil are sold annually • 50% of oil is consumed and 50% is used oil • 31% of this “used oil” is never recycled! • Used oil can be burned for energy or re-refined • Burning oil results in air pollution • sulfur emissions • hydrocarbon pollutants • 3 to 5% of used oil that is re-refined ends up as hazardous waste sludge

  4. P2 Alternative: Oil Life Extension • Successful program needs two elements: • Good baseline data • Regular sampling • Does not require much extra labor • Collect during scheduled maintenance

  5. Oil Life Extension: Approach 1. Select a few vehicles to monitor 2. Gather vehicle history data 3. Collect and test oil samples from 2 consecutive oil changes to establish a baseline 4. If no problems, increase interval by 25% 5. Test oil at interval and compare to baseline 6. If results are favorable, increase the interval further

  6. Sample Collection: Method 1 • Install a valve to draw off oil just before the filter

  7. Sample Collection: Method 2 • Withdraw oil through a narrow hose inserted into the dipstick tube Photo

  8. Sample Collection: Method 3 • Take sample from oil when oil is changed (within 15 minutes of engine shut off)

  9. Engine Oil Testing • On-site - can reduce waiting time for results and lower program costs • Off-site - provides more testing parameters and data interpretation

  10. Common Engine Oil Contaminants • Antifreeze : bearing damage; piston, ring, liner wear • Fuel: lowers viscosity, bearing failure • Sand and dirt (silicas): abrasive wear on engine parts • Water: formation of metal-corroding acids • Metals: engine wear particles from various sources

  11. On-Site Test Method: Dielectric Constant • Dielectric constant changes as engine oil breaks down or becomes contaminated • Easy, accurate, and quick • Unit cost: $600 – $700

  12. Case Study 1: Eielson AFB • Fleet = 800 vehicles (trucks, vans, and heavy machinery) • Use a CSI #5100 for on-site testing (cost = $8k) • 40 to 60 samples per month • Analyze for silica, iron, and metal • Average oil change interval has tripled • Oil purchase and disposal reduced by 87% • Payback: 4 months

  13. Case Study 2: Hickam AFB • Fleet = 659 vehicles (trucks, vans, and cars) • Test on-site with CSI #5100, previously used LubriSensor • 45 samples per month tested for silica, metals, ferrous materials, and water • Oil change interval doubled • Oil disposal and purchase reduced by 46% • Payback: 1 1/2 years

  14. Case Study 3: City of SF • 14 passenger cars • Test off-site for silica, metals, ferrous materials, fuel, and water • Used to predict potential extension • Can extend change interval 25-50%

  15. Take Home Messages • Oil testing is more than P2 – it is PM! • Easier than you may think • On-site testing is a good starting point • Talk to local labs!

  16. Re-refined Oil

  17. Re-refined Oil Facts • Re-refining is energy efficient • API certified re-refined oils comply fully with vehicle manufacturers warranty requirements • Good as or better than virgin oil • Price is comparable to virgin oil • Group procurement agreements can save $

  18. Fleet Users • CHP • City of Woodland • USPS > 100,000 vehicles • CalTrans • DGS • City of San Francisco • Defense Supply Ctr. Richmond - US DOD

  19. Procurement • Federal and State Agency procurement requirements for recycled content lubricating oil • State Agency requirements: SABRC • Guidance Manual: http://www.ciwmb.ca.gov/BuyRecycled/StateAgency/Manual/Default.htm • Recycled Content Product Database http://www.ciwmb.ca.gov/RCP

  20. Procurement (Con’t) • State and local agencies can use statewide DGS contracts • DGS Procurement Division • Contract #1-96-91-03, lube oil & grease • Contact: Dianne Cardona (916) 445-9476

  21. Take Home Messages • Stable TBN • Comparable costs • Oil does not wear out • Oil - Non-renewable source Help Save Me!

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