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Unit 6 Engine Oil Life Extension

Unit 6 Engine Oil Life Extension. Baseline: “Prescribed” Oil Change. Need-it-or-not changes based on: Mileage Calendar Operating Time. Environmental Concerns. 2.7 billion gallons of oil are sold annually 50% of oil is consumed and 50% is used oil

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Unit 6 Engine Oil Life Extension

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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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