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icvci · 02-05-03, 01:24

Why are Honda and Ford demanding 5W-20 for their vehicles? Why does Honda say it's okay to use 5W-30 but to change back at the next oil change?

Why don't Castrol or Mobil make a full synthetic 5W-20?

What's going on here?

02-05-03, 01:24	#3 (permalink)
icvci Registered User icvci is offline Join Date: Dec 2002 Location: Michigan Posts: 5	My only oil question Why are Honda and Ford demanding 5W-20 for their vehicles? Why does Honda say it's okay to use 5W-30 but to change back at the next oil change? Why don't Castrol or Mobil make a full synthetic 5W-20? What's going on here?