Originally Posted by smoknhothonda
Castrol magnatec isnt a bad product, its definately better then the shit most honda dealerships use!!
You will notice that it will idle smoother, pick up better from lower revs and use less fuel.
Magnatec is a semi synthetic oil, which is what is reccomended after changing from a mineral oil.
Next time try castrols 0W/40, it around $65 for 5L at supercheap, then you will notice a huge improvement once again! Dont be worried about the rating, because its a synthetic, it doesnt break down as easy as a mineral oil, hence the low viscosity.
Im using Fuchs Titan GT1 0W20, damn pricey, but one of the best oils on the market in my opinion.