DFord wrote:
The original V-10 F-53 came with a short dipstick (1999-2000) making it appear it needed more oil to bring it up to the full mark. The replacement dipstick was Part # F81Z-6750-HC Indicator - Oil Level
The correct capacity of the V-10 in the F-53 has always been 6 quarts with a filter change unless you've modified the oil pan.
TSB 01-10-5 Publication Date: MAY 15, 2001
ENGINE - 6.8L - OIL LEVEL INDICATOR READS INACCURATE - SUPER DUTY F-53 MOTORHOME CHASSIS VEHICLES - UPDATED OIL LEVEL INDICATOR
FORD: 1999-2001 SUPER DUTY F-53 STRIPPED CHAS.
ISSUE:
On some 6.8L equipped Super Duty F-53 Motorhome chassis vehicles, the oil level readings on the engine oil level indicator (dipstick) may read inaccurate (low) when the actual levels are within acceptable limits and adequate oil volume is in the sump. This may be noticed after an oil change, 5.7 L (6 quarts) of oil are added, and the engine has been started to fill the galleys and filter. The engine oil level indicator may then indicate 0.47 to 0.95 L (1/2 to 1 quart) low. This may be caused by the oil level indicator design.
ACTION:
Remove engine oil level indicator and replace with new design engine Oil Level Indicator (F81Z-6750-HC) which has correct markings to record oil levels at acceptable ranges. The new indicator has a "loop" handle. The prior indicator has a "Tee" stick-type handle (Figure 1).
PART NUMBER PART NAME
F81Z-6750-HC Indicator - Oil Level
2002 Ford Excursion V-10 always took just over 6 1/2 qts. I always put the full 7 in and it was just over the full mark by a hair. Same goes for my 2012 F53. But on mine it seems to be full at the 61/2 qts. 6qts would make it below the full mark.