- Joined
- Jun 1, 2012
- Messages
- 350
- Reaction score
- 1
- Location
- Port Republic MD
- My Car
- 1973 Mustang Mach 1 429 cu. in. C6 Auto
2007 Mustang GT Convertible 2002 Lincoln Continental
2006 Toyota Corolla S Type
2006 Honda Goldwing
So getting ready to fire up my 429 and wanted to change the oil before doing so? Just wondering what the best viscosity for these engines. It is performance built and has less than 1k miles on it. I was thing a 20w50 synthetic. It has an 8qt pan on it!