sdavis,

Mura yang kuha mo sa Magnatec and I assume yan yung gallon pack ano? Pero kung ako tatanungin mo since 10W40 grade ang Magnatec, I would feed my engine with Shell Helix Plus 10W40 or Mobil1 Super S 10W40 (both are top of the line semi-synthetic oils) di lang cost-effective but performance-proven kasi may mga acquaintances ako who are using said motor oils with odometer reading of 160,000-200,000 kilometers di pa overhauled ang engine and runs like a breeze :shock: now that's proven engine protection! Both motor oils cost P800+ a gallon :D

Next oil change I might shift to Shell Helix Plus kasi recommended oil for my jurassic 12-year old engine is 10W30 or 10W40. :wink: