Probably API SM or SL 5W-30. Look in the owners manual or ask a parts house to look it up.
Synthetic
A 1999 Toyota Camry needs four quarts of oil :-)
Your owner's manual should have this for you, but it may depend on where you live and how you drive. I live in Alaska and drive 30,000 miles a year. I change my oil regularly and use 5W30. 2002 Camry LE
On the bottom, side, or rear of the oil pan.
10W30 5 quartz
There is not enough information to answer this question
Should be on the oil filler cap. Probably 5W-30 API SL. Look in the owners manual if you have one.A parts house can help.
10W 30 is generally best.
The Camry DX is a more basic model that compared to the Camry LE. The DX has the AC as an option while the LE it is always included.
If the styles are the same...depends on type,,,EX CX LE,etc...
Toyota 5W30.
5.0 don't overfill it will break your transmission.