Syntec oil option for '05 Buick Park Avenue SC

[sckev]

Hello to all! I was just wondering what is the best weight of oil to use with in my supercharged 3.8L motor. It has 70K on the clock. It calls for 5-30W. I recently got the castrol / K&N deal at advance auto.All they had was 5-40W oil. They said that I could exchange it when the 5-30W oil comes in. Is it ok to use it for this time of year in PA? Thanks and have a nice day....Kevin

 

[addyguy]

The 5W-40 will work just fine in that engine, especially for the summer. I'd use it.

 

[sckev]

Thanks ADDYGUY ! ... I'll be putting it in this coming week.

 

[daves87rs]

 Originally Posted By: addyguy

The 5W-40 will work just fine in that engine, especially for the summer. I'd use it.

+1

 

[Nickdfresh]

5W-40 would be fine. But I'd change it out for 0W-30 Castrol SYNTEC when it comes in...

 

[Jaymus]

It will be fine, but those 3.8's have excellent oil pressure on 30 weight oil. I'd use the Syntec 0W-30, myself. It is the best Syntec, imo.