Ester/Dino/Synthetic Oil - Your usage.

o0javi0o

Getting back to main topic, I am running 800mi/qt aprox. using Royal Purple 10w-30.
2007 Nissan 350z. I haven't experienced any problem using 10w-30 and I've been using it since my very first oil change after 3700 OEM miles.

ZforMe

You have to add a quart every 800 miles???

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13.369 @ 102.73 Bone Stock. BERK HFC's installed 5/14/09 @ 1490miles, 13.212 @ 106.15. Cobb Post MAF Hoses installed 3/20/10 @ 5,043miles, future: FI exhaust with 18" res and s/s cans.

ChrisSlicks

I had to add about 1/2 a quart after 800 miles, oil burning stopped after that.

ZforMe

What oil are you using? (sorry if I missed it)

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13.369 @ 102.73 Bone Stock. BERK HFC's installed 5/14/09 @ 1490miles, 13.212 @ 106.15. Cobb Post MAF Hoses installed 3/20/10 @ 5,043miles, future: FI exhaust with 18" res and s/s cans.

ChrisSlicks

I'm still on the Nissan Ester oil, I may change to something else later once I hit 5000 miles. Not sure what oil that might be yet.

Travis is right on about oil viscosity. Here's a couple of typical viscosity numbers for you.

Sorry about the formatting, doesn't want to space correctly.
_________5W-30 ________ 15W-50
100F ____ 57 cSt ________ 143 cSt
220F ____ 10 cSt ________ 20 cSt

So the 15W-50 is nearly 3 times as thick at air temperatures, but twice only twice as thick at high temperatures. As the oil temperatures continue to climb towards 260 the viscosity is going to be close to 5W-30 at normal cruise around town temperatures.

Basically the oil is going to hold up better at the track but you might pay the price of increased start-up wear so it's not a good choice for a daily driver oil.