I installed this on
Peugeot 308

Review
After I change my oil to Castrol, the whole car seems smooth.
Maybe it the effect that I change after 10k. I was using Amsoil previously but after I changed oil after 10k it did not go that smooth as this.
Maybe its better.
I need more time to try it. Now I only had 30Km on it.

What I like
Smooth and quiet engine

What I do not like
Price tag, its more expensive then my normal Amsoil that I use.

I installed this on
Mazda 3

Review
My previous oil used was Motul 300v 5W30.

I had wanted to use Castrol 5W30 but the mechanic poured in 5W40 instead.

Engine noise is low. Compared it with 300v. Fuel efficiency is almost the same. Till now about 9000k, engine maintains at low noise. During cold start, can feel sign of sluggishness when moving off. Also, experienced slight vibration during start up.

Smooth at operating temperature.

Overall a good oil.

What I like
Engine maintains at low noise.
Smooth at operating temperature.
For a W40 vioscity, fuel efficiency is considered good.

What I do not like
During cold start, can feel sign of sluggishness when moving off.
Experienced slight vibration during cold start up.
Price differs a wide margin from different workshops. So check out the price first.

I installed this on
Toyota Corolla

Review
My car has always been on castrol 5w-30 then 1 day i thought y not try castrol edge 5w-40 as the price difference quite small and it turns out damn good. after the oil change can feel that the car pick up is smoother and faster.

What I like
1. Engine is smoother
2. Pick up is faster
3. Available at Tesco for RM 150

What I do not like
1. Autobacs selling for SGD116 (just the 4L itself) really very very expensive unless you their engine service program.

Review
The engine is purring smoothly ever since I started using this oil. Startup is smooth and not harsh, and the engine performance is much sharper and more responsive now. Idling is also quiet and my fuel consumption has reduced slightly with this oil. It's easy to find too.

Review
I tried it before and I may go back to it again. My engine just runs very well with this oil. Quiet, smooth and never had any problems with the engine oil drying up/evaporating.

Review
Good and smooth EO for my K20A engine. Remember to buy the Titanium version, it is better than the normal Castrol Edge.

What I like
Starts to turn brown after 5-6k km, but overall still fairly lasting compared to other brands

What I do not like
Price! You are looking at 110-120 for 4L