According to my Chilton's Auto Repair manual :
For a 1988 Ford Thunderbird ( 3.8 liter V6 engine )
With engine oil filter change :
( 5.0 U.S. quarts )
What engine do you have?
I just personally changed my oil the other day. It took five liters. That's for the base model, anyway.
5.5 Qts
exactly 5 quarts of 5w30
According to my Chilton's Auto Repair Manual : For a 1987 Ford Thunderbird , 3.8 liter V6 : With engine oil filter change : ( 5.0 U.S. quarts )
According to the 2002 Ford Thunderbird Owner Guide : The 3.9 liter V8 engine takes : ( with engine oil filter change , 5.7 litres / 6.0 U.S. quarts of engine oil )
the oil capacity varies form 4.5 quarts to 4.75 quarts depending on the filter you use
10w30
According to my Chilton's Auto Repair manual : For a 1991 Ford Thunderbird , 3.8 liter V6 engine ( supercharged and non S/C ) With engine oil filter change : ( 5.0 U.S. quarts )
The oil capacity is 5.7 litres or 6.0 quarts.
According to the 1997 Ford Thunderbird Owner Guide : For the 3.8 liter V6 and the 4.6 liter V8 engines : With engine oil filter change : ( 4.7 litres / 5.0 U.S. quarts of 5W-30 engine oil )
The oil capacity for a 2.7 liter Suzuki is approximately 5 quarts. The recommended oil type id 5 W 30.