Originally Posted By: burgessdg
Originally Posted By: CATERHAM
If this is just a cost thing I doubt you're saving much if anything choosing a dino 5W-20 over the most fuel efficient 0W-20s; namely the OEM Toyota and Mazda brands. You can get the Mobil made Toyota 0W-20 in bulk for about 20 bucks to fill a 5 quart jug.
A dino 5W-20 is not much cheaper than that and once you add in a conservative 2% fuel economy savings (probably more in the winter months) using a dino is probably costing you more. And that's not even factoring the other performance benefits of the high VI 0W-20 grade.
Ok, $20 for synthetic, less than $10 for the dino. That's $10. Oh, and no Toyota or Mazda dealers within 30 miles. And 2% for 0W-20 syn over 5W-20 dino? Never happen. And any other performance benefits are claims, not fact as far as I'm concerned. I have used synthetic in the past, saw nothing to justify the cost. Sorry, just can't buy all the synthetic hype.
Dan
You don't have to apologize to me if you don't "buy all the synthetic hype". I do understand that it's human nature for some
to automatically reject anything that's new even without trying it, but that's your loss no one else.
I will tell you that the first time I tried the Toyota 0W-20, about five years ago now, I was shocked at how low my cold oil pressure was that I thought something was wrong. But it was just a reflection of how light the oil is when cold vs a 5W-20 (even a 5W-20 synthetic).
How much lighter? A good 30% at room temperature, over 55% at 32F and even more so at lower temp's.
Now if you want to think this fact has no significant impact on fuel economy and performance generally that's fine; somebody has to buy all the dino out there.
I used to be able to get all the dino 5W-20/30 oil I wanted for free from a friend in the trade but once I found out first hand the performance benefits of the high viscosity index 0W-XX synthetic oils I stopped using dino oil entirely.