If you are just looking for good stock replacements some good brands are Infinity, JBL, Focal, pioneer, and my most favorite is Rockford Fosgate.
Just my personal opinion stay away from kicker speakers, they sounded like crap to me.
Ive recently noticed Schaeffer manufacturing 9000 series oils now have the SN plus and
ILSAC-GF5 approved
https://engineoil.api.org/Directory/EolcsResultsDetail?companyId=10248
Originally Posted by JustN89
Originally Posted by Diesel12
Ive had excellent results with this fluid
Schaeffer All-Trans https://www.schaefferoil.com/documents/90-204SAT-td.pdf
This is NOT the correct fluid for SP-IV M.
If you want to run Schaeffer's trans fluid, the correct fluid to run...
My dads 03 durango was burning oil pretty decent. It has 220K 4.7L. We tried a bottle of stop leak and it worked pretty well.
https://motorkote.com/products/motorkote-all-seal-stop-leak-8-oz
Circuit/System Description
In order to maintain a reasonably low emission level of hydrocarbons (HC), carbon monoxide (CO), and oxides of nitrogen (NOx) a 3-way catalytic converter (TWC) is used. The catalyst within the converter promotes a chemical reaction that oxidizes the HC and CO present...
According to GM service bank 2 is the left side. Here are the instructions for system testing per GM.
Circuit/System Testing
 1. Observe the DTC information with a scan tool. Verify there are no HO2S, fuel system, or misfire DTCs set.
⇒ If there are any HO2S, fuel system, or misfire DTCs...
Originally Posted by beanoil
Originally Posted by Diesel12
Rotella T6 5w-40 is available everywhere and its cost effective. Schaeffer makes a good V-twin oil for bikes with wet clutch.
https://www.schaefferoil.com/vtwin-oil.html Seems to be really popular on harley forums.
No and no.
5w40 in a...