ATH

I've read lots of past posts regarding this, but I want to see what you think since this is a moderate climate (gets really hot, as well as cold). What weight and brand?

My dealer (stevens creek) said they have 5w-30 in there, so when i add oil before the change, is it bad to mix brands? Or should I just wait to get the oil changed and use my own oil?

CrappleZero

AFAIK, >30K, 0w40 Mobil 1...which is what i use exclusively...even if i have to drive around a lot to find it.

ATH

Do you use 0w-40 all year around?

I guess I'll just switch at the next oil change.

MingsS4

I use Mobil 1. It comes as factory fill in AMG(MB), Porsche, and Viper. The locally available 0w-40 is one of the few oils that meets the tough Europeon ACEA A3 requirements.

<b>A1</b> - Oil intended for use in gasoline engines specifically designed to be capable of using low friction, low viscosity oils with a High Temperature / High Shear Rate Viscosity of 2.6 to 3.5 mPa.s. These oils may be unsuitable for use in some engines. Consult owner manual or handbook if in doubt.

<b>A2</b> - General purpose oil intended for use in most gasoline engines with normal drain intervals, although it may not be suitable for some high performance engines.

<b>A3</b> - Stable, stay-in-grade oil intended for use in high performance gasoline engines and / or for extended drain intervals where specified by the engine manufacturer, and / or for year-round use of low viscosity oils, and/or for severe operating conditions as defined by the engine manufacturer.<ul><li><a href="http://www.acea.be/ACEA/20020618PublicationsOilSequences.pdf">ACEA European Oil Sequences</a></li></ul>