Simon Clowes
Member
1999 Expy 175000 miles on clock. 5.4l V8.
Symptoms
1) Sudden need to use extra RPM to maintain speed on slopes that did not previously need it, often causing a downshift.
2) Slight drop in overall mpg - approx 2.5 mpg.
3) High pitched whistle that only seems to be there on acceleration.
4) Intermittent loss of oil but no visible sign of leak. I can several weeks (approx 300 mile per week) with no loss then next couple of weeks go thru a quart a week then back to no loss.
I am aware these may well be separate issues but they all showed at about the same time.
I have checked transmission fluid - good level and colour. confirmed is switching into OD. Inspected for oil leaks both engine off and running. No observe burnt oil in exhaust.
At this stage I am head scratching
Symptoms
1) Sudden need to use extra RPM to maintain speed on slopes that did not previously need it, often causing a downshift.
2) Slight drop in overall mpg - approx 2.5 mpg.
3) High pitched whistle that only seems to be there on acceleration.
4) Intermittent loss of oil but no visible sign of leak. I can several weeks (approx 300 mile per week) with no loss then next couple of weeks go thru a quart a week then back to no loss.
I am aware these may well be separate issues but they all showed at about the same time.
I have checked transmission fluid - good level and colour. confirmed is switching into OD. Inspected for oil leaks both engine off and running. No observe burnt oil in exhaust.
At this stage I am head scratching