Good oil?

[poison]

Anyone know what the typical MAZDA dealer uses?

we bought our P5 used, (with plenty of great service records) at 124 K, and my wife INSISTS I take it to the dealer for it's first oil change under us.... (freak)

I've looked throught the records, and although it seem 5w/30 has been the norm, cant seem to figure out if they kept is standard or synthetic....(dunno)
I was thinking of "from here forward" as long I I have it, synthetic.

Dealers use whatever brand they like, as long as it fits manufacturers specs. Could be any 5/30.

Was it for the better?

Absolutely not. It was a bean-counting call. Group III is cheaper than Group IV, yet still called 'synthetic'. Who's gonna know, without sending it off for testing at the lab? And who does that*?
















*www.bobistheoilguy.com is who.

 

[magnumP5]

I've run just about everything and in actuality you probably aren't going to notice a difference. I bought my car with 34k on it and made the switch to full synthetic not too long after. I've tried everything from Mobil 1 to Amsoil to Redline to Pennzoil. In all honesty I thought my car burned through Amsoil and Redline oils a lot faster than Mobil 1. I ran Mobil 1 for years and just recently switched to Pennzoil to try something different (and I heard good things about Pennzoil Platinum). So far so good as I've been burning less oil than before, but then again that might be due to the warmer weather. FWIW, I change my oil every 3000-5000 miles even with synthetic but then again my P5 is turbocharged and sees high engine speeds and oil temperatures frequently.

 

[poison]

my subaru ate redline up pretty fast, so ymmv. odd, because its supposed to be pretty robust stuff.