Can i use synthetic oil in northstar?

[KingRamses]

I have a 2003 STS with a northstar engine, i wanna know if i can use synthetic oil inside this engine. And what is the best oil than i can use for this engine?

Thanks!

[EcSTSatic]

Read you owners manual and follow the recommendations. That's really all you need to know.

Or you could do a search and read the volumes of opinions!

[Cadillacboy]

Steve Steve Steve


opppsssss what would we say ? Oh yeah amsoil amsoil amsoil

[submariner409]

Your owner's manual recommends 5W-30 oil for everything other than HOT climates. Mobil 1, Pennzoil Platinum, Royal Purple, whatever floats your boat in a name-brand oil.

I use exclusively Pennzoil Platinum 5W-30 and a WIX 51522 filter, change oil every 6000 - 8000 miles and get about 3,500 miles to the quart; town, country, highway, crazy driving. Look down into the chaincase with a flashlight, through the oil fill cap, and it's absolutely new-metal clean.

Read the oil article up ^^ there in the archives/technical. You have reopened Pandora's Box.

[Ranger]

Originally Posted by Cadillacboy

Steve Steve Steve


opppsssss what would we say ? Oh yeah amsoil amsoil amsoil

[Ranger]

Originally Posted by KingRamses

I have a 2003 STS with a northstar engine, i wanna know if i can use synthetic oil inside this engine. And what is the best oil than i can use for this engine?

Thanks!

Pleeeease do a search.
Yes, you can use synthetic. You can use any oil that you want.

[urbanski]

no need for another one of these, right Ranger?

[Ranger]

Amen! I had thought about locking it.