Get on the corner of Truck and aim slightly above the wall cutout.

Nade Time till goes off : 7 seconds
Smoke fade: 25 seconds after throw

Nade Ranking (stars are rated as 5 is the worst and 0 is the best, so the more stars the more challenge/time/difficulty/risk)

Setup Time: ★★★★☆ (because the jump onto truck can be hard, approx. 5-20 seconds)
Practice till Flawless execute: ★☆☆☆☆ (approx. 2-3 attempts till you can hit it regularly)
Cost of Failure: ☆☆☆☆☆ (Hard to mess up, no real cost)
Throw Difficulty: ★☆☆☆☆ (Easy to aim once you learn)

Nade Overall Rating: ★Occasional★
|| Occasional- Someone who has utility occasionally but doesn't practice ||