Oil thread

[AnthonySaab]

Ok - I know im being paranoid - but just want to confirm. I recently purchased a 2003 9-3 Convertible. The manual calls for 5-30 synthetic. I used Pennzoil Platnium 5w-30 about 2 weeks ago (100 miles since changed). Anyway, Im reading now about 0w-40. Do you think I should replace the oil with Mobil 1 0W-40? Also, I purchased a OEM GM Filter - can I use that filter with Mobil1 or do you recommend a different type. Any help would be appreciated. Oh and the VIN has a Y in it - if that helps.

Thank you.

[CarbonFlash]

Ok - I know im being paranoid - but just want to confirm. I recently purchased a 2003 9-3 Convertible. The manual calls for 5-30 synthetic. I used Pennzoil Platnium 5w-30 about 2 weeks ago (100 miles since changed). Anyway, Im reading now about 0w-40. Do you think I should replace the oil with Mobil 1 0W-40? Also, I purchased a OEM GM Filter - can I use that filter with Mobil1 or do you recommend a different type. Any help would be appreciated. Oh and the VIN has a Y in it - if that helps.

Thank you.

Well you've got the older 9-3 version with a different engine I believe. You might want to check over in that forum.

[Shazam]

I'm no oil expert, but as long as it's a decent synthetic, you'll be fine. I wouldn't go wasting all that oil. The PP is a very good oil. I only use Mobile 1 because the local Autozone always has good deals on it when I get it, but the first couple times I used the Castrol Syntec... don't notice a difference.

[fiveiron]

Ok - I know im being paranoid - but just want to confirm. I recently purchased a 2003 9-3 Convertible. The manual calls for 5-30 synthetic. I used Pennzoil Platnium 5w-30 about 2 weeks ago (100 miles since changed). Anyway, Im reading now about 0w-40. Do you think I should replace the oil with Mobil 1 0W-40? Also, I purchased a OEM GM Filter - can I use that filter with Mobil1 or do you recommend a different type. Any help would be appreciated. Oh and the VIN has a Y in it - if that helps.

Thank you.

I don't think you'll want to use a 30 weight oil in that era of 9-3. Doesn't hold good oil pressure, and is one of the reasons for the sludge issues with those cars. I used Mobil1 10W-40 for a while, but switched to Rotella 5W-40 full synth which I think is better (some people have done oil analysis on M1 oil and found a couple issues with it...I had no problems, but changed anyways).

And I think the GM filter is fine, I ordered a bunch of them through eeuroparts some time ago. Make sure you're doing 4k oil change intervals.

[Suemax]

I don't think you'll want to use a 30 weight oil in that era of 9-3. Doesn't hold good oil pressure, and is one of the reasons for the sludge issues with those cars. I used Mobil1 10W-40 for a while, but switched to Rotella 5W-40 full synth which I think is better (some people have done oil analysis on M1 oil and found a couple issues with it...I had no problems, but changed anyways).

And I think the GM filter is fine, I ordered a bunch of them through eeuroparts some time ago. Make sure you're doing 4k oil change intervals.

So you are recommending 4k changes? (I blew an engine on my last 93 convertible - I am hypercautious!