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· Registered
2007 Matrix XR
16 Posts
I asked the same thing last week

at my local dealership. The service manager told me they use a group IV 5w30 as recommended by TMC. I didn't see the label on the bottle, so I can't answer that part of your question. However, since this was the 3000 mile service on my '07 Matrix, I trusted the dealership to know what was required by warranty. And it cost about $24.

Now, as to whether a group IV based oil is synthetic, or semi-synthetic, what %polyalphaolefin a particular oil contains, etc ... that's a whole 'nuther debate. Hopefully you've done your homework on the topic, so you know that the bottles of Mobil1 you can buy at WallyWorld or elsewhere are not the same formula as they were a couple years back, that the current Mobil1 is similar to Castrol's after Castrol won the suit on the "semi-synthetic" label classification, etc.
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