Went there yesterday to flush my diesel engine after I accidentally refuel my diesel 4WD with petrol.... The guys there are quite helpful, although not as friendly as the waitress from 5 star hotel, but they get the job done!
They charge me only RM50 (including RM27 of diesel that they bought for me from the nearest petrol station) for 3 hours of work. I have no prior experience of such incident (and hopefully this will be the last!) but no matter how you count it, RM50 is dirt cheap!
So far after driving for about 40km, the engine and everything seems ok, so I'm very happy with their services. Highly recommended.