im using:

Brand: Syntium 800
Model: 15w-50
price: got it for free
Feedback: normal. dont think its the best. i used it cuz i forgot to check my engine oil and tiba tiba red light already blinked. luckily got one 4l package in the car (got it for lucky draw). engine power felt okay but not so much compared to penzzoil (but i forgot which one cuz my mechanic filled it in for me before it went dry)
rating: 4/5...

but in future, im planning to go for syntium 5000 or syntium 3000
im petronas staff, so got it cheap
anyone tried these?