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TigerShark Lawsuit on Oil Consumption/Failure - Page 3
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Thread: TigerShark Lawsuit on Oil Consumption/Failure

  1. #21
    Senior Member Alisobob's Avatar
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    " 1 quart per 750 miles" is considered acceptable?


  2. #22
    Moderator map's Avatar
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    It varies by engine and make, but several makes allow for even higher consumption. Certain Audi and BMW engines consider a quart per 600-700 miles as being normal. Honda just lost a class-action on engines that were sucking oil. Their "solution" was to offer a 10 year, 150K warranty... and let them suck oil. The 2013-14 Insight probably triggered the original suit. Audi and Subaru are facing similar suits, with Subaru saying a quart every 800-1000 miles is OK. Their "solution" is to offer $500 to some owners.

    As oils get thinner, engines smaller, and tolerances get looser (in an effort for best MPG) consumption goes up. It is only made worse with longer oil change intervals. I assume having the underside of the piston sprayed w/ oil might also increase consumption. While some engine makes are noted for high consumption, others engines vary wildly... from almost none used to near 2 stroke consumption... same engine and assembly line.

  3. #23
    Senior Member Alisobob's Avatar
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    Quote Originally Posted by map View Post
    As oils get thinner, engines smaller, and tolerances get looser (in an effort for best MPG) consumption goes up.
    Uhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh........... tolerances have never been tighter

  4. #24
    AWD enthusiast Lifetime Member 5port's Avatar
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    Quote Originally Posted by Alisobob View Post
    Uhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh........... tolerances have never been tighter
    Oil rings have never been looser. Low tension oil rings being used thru-out the industry.

    2016 Fiat 500X Easy

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    Senior Member HalfPint's Avatar
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    Yup, low tension rings and short skirt pistons (Hyundai just put a new short block in our Elantra at 110k mi). It seems like MultiAir may be causing stronger low pressure pulses in the cylinder than would happen with a throttle plate, making it pull more oil past the rings - but that's a guess on my part.
    Completely stock 2016 500 Abarth, Rhino & Nero,
    2017 Jeep Renegade 1.4 Turbo, Anvil & Black
    2016 Ford Fiesta ST

  6. #26
    Amministratore Fiat500USA's Avatar
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    Below are the official oil consumption guidelines. Compared to some other companies, the FCA guidelines are pretty lenient, at least for "normal" use.

    Quote Originally Posted by Fiat500USA View Post
    Hi David,

    The engine holds 4 quarts. I think the main thing is if you remembered what the mileage was the last time you checked the oil before having to add some and where it was on the stick. Probably impossible to recall info like this so maybe fill it up, make a note of the mileage and then check it at a regular interval and see how low it is and record the mileage. Check the oil the same way to be consistent as oil levels will vary depending on the when it is checked.

    Here are the official Fiat 500 oil consumption guidelines, courtesy of Chrysler:

    DISCUSSION:
    Engines require oil to lubricate and protect the load bearing and internal moving parts from wear including cylinder walls, pistons and piston rings. When a piston moves down its cylinder, a thin film of oil is left on the cylinder wall. During the power stroke, part of this oil layer is consumed in the combustion process. Varying rates of oil consumption are accepted as normal in all engines.

    Oil Consumption
    The accepted rate of oil consumption for engines used in the vehicles listed above is 0.946 liter (1 qt.) in 3,200 km (2,000 mi) for the 1st 80,467 km (50,000 mi). For vehicles with more then 80,467 km (50,000 mi) the acceptable oil consumption for engines is 0.946 liter (1 qt.) in 1,207 km (750 mi).


    CAUTION: This above rate only applies to personal use vehicles, under warranty, that are driven in a non-aggressive manner and maintained in accordance with the appropriate maintenance schedule,

    CAUTION:
    This rate does not apply to vehicles that are driven in an aggressive manner, at high RPM, high speeds, or in a loaded condition (for trucks). See ‘Causes for Oil Consumption’ below. Oil consumption for vehicles driven under these conditions will be higher and may include Fleet and Commercial customers. There are many factors that can affect a Owner's concern with oil consumption. Driving habits and vehicle maintenance vary from owner to owner. Inspect each condition listed below prior to determining if the vehicle in question has abnormal engine oil consumption. If abnormal oil consumption is suspected, refer to the detailed diagnostic procedures available in DealerCONNECT

    CAUTION:
    Operating the vehicle with an oil level that is below the minimum level indicated on the engine oil dipstick can result in severe engine damage. Repairs resulting from operating an engine with insufficient oil are not covered under the terms of the New Vehicle Warranty.

    Oil Dilution (Fuel and Water)
    On vehicles that are normally driven short distances, less than 8 km (5 mi), especially in colder weather, unburned fuel and condensation generated from cold engine operation may not get hot enough to evaporate out of the oil. When this occurs, the dipstick may indicate that the oil level is over-full. Subsequent driving on a trip of sufficient length to
    enable normal engine operating temperature for 30 minutes or more, in order to vaporize excess moisture and fuel, may give the customer the impression of excessive oil consumption.

    Causes for Oil Consumption

    Aggressive Driving
    Aggressive driving and/or continuous driving at high speeds with high RPM's will increase oil consumption. Because this may not always be an everyday occurrence, it is hard to determine exactly how much the oil economy will be affected. A higher rate of oil consumption is normal for vehicles equipped with manual transmissions that are driven
    aggressively. Aggressive means; operation at high RPM (3,000 RPM to redline), with frequent use of engine braking (using the engine to slow the vehicle). Vehicles that are driven aggressively may consume engine oil at a rate of up to 0.946 L (1 quart) every 805 km (500 mi). This is normal for a vehicle that is driven aggressively. No repair is necessary. This driving habit will require the owner to check the engine oil level at frequent intervals, to verified the oil level remains within the recommended operating range. Oil level should be checked every time you get fuel.

    Towing or Heavy Usage
    Towing a trailer will increase oil consumption and may cause oil consumption to fall below the normal accepted rate referenced in this bulletin for an unloaded vehicle in a personal use application. Large frontal area trailers will further increase the work required from the engine, especially at highway speeds increasing the rate of oil consumption.

    Engine Wear
    Piston scuffing, excessive piston-to-wall clearance, tapered or out of round cylinders, worn, damaged or improperly installed valve guides, seals and piston rings will cause an increase in oil consumption.

    Engine Temperature
    If an engine is run at overheated temperatures for more than brief periods, oil will oxidize at a faster than normal rate. In addition, gaskets may distort, piston rings may stick, and excessive wear may result. Verify that all cooling system components are in proper working order.
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