What does excessive oil consumption in a car mean?
Troubleshooting Excessive Oil Consumption in Your Car. Excessive oil consumption is an indication that the engine of your car is not operating properly. An engine that is becoming worn may burn smaller excesses of oil, but an engine that requires the addition of an extra quart of oil will most likely need to be repaired.
What happens if you put too much oil in your engine?
Then, at a certain point, excess ring and cylinder wear can lead to engine damage. After producing engines with AFM for a few years – and learning of oil consumption problems – GM developed a partial fix. A shield was added that keeps the oil from being pushed out and sludging up the pistons.
How does the AFM system cause excessive oil consumption?
How The AFM System Can Cause Excessive Oil Consumption. The AFM excessive oil consumption problem usually crops up on vehicles that go on long highway drives. These kinds of trips don’t put much stress on the engine, so the AFM system deactivates pistons.
Is your 5.3L V8 engine eating up too much oil?
Is Your 5.3L V8 Engine Eating Up Too Much Oil? We Have Two Solutions For You. Does your GM vehicle have the 5.3L V8 with variable displacement technology called Active Fuel Management (AFM)? If so, it may be causing your engine to consume oil at a faster than expected rate.
What causes excessive oil consumption in an engine?
Below are the top 5 causes of excessive engine oil consumption. Worn Seals or Gaskets – If your vehicle has worn out or damaged crankshaft seals or valve cover gaskets, then it will be leaking oil.
How The AFM System Can Cause Excessive Oil Consumption. The AFM excessive oil consumption problem usually crops up on vehicles that go on long highway drives. These kinds of trips don’t put much stress on the engine, so the AFM system deactivates pistons.
What happens when your oil consumption exceeds the warranty?
The test measures how much oil you consume over several weeks of driving. If your car’s oil consumption exceeds the manufacturer specifications and it’s still under its original powertrain warranty, Consumer Reports believes the dealer should repair or replace the engine free of charge.
Are there any external signs of excessive oil consumption?
There were no external signs – no leaking, no smoke, etc. When I asked if they had ever seen anything like it – there answer was no. When I asked what is the usual cause?