Repco

Very knowledgeable helpful staff & know exactly what you are looking for & nearly always have the part/bottle etc... for your car in stock, if they don't they make calls until they find it. When I purchased oil for my car had no idea that I could get an RACV discount on it... but they let me know I could so was very please to save a few $$ that day!
This would be my first place to call into if I need anything for my car, for the little extra you may pay in price is made up for in staff expertise.