Hi, i have an 87 iroc camaro with a 305 carb. what kind of oil should i use 10w-30 or 10w-40. thanks

 

How many miles are on your car? How much oil does your car consume? Does it have any oil leaks? I live in southwest Florida and I use 10w40 year round. I think you should use 10w40 in the summer and 10w30 in the winter. If you have low oil pressure or have some leaks, you might want to use 20w50 or even SAE 30.

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1988 Camaro Sport Coupe: Orignally: 305 TBI 700r4
Now: 1974 350CI, 2bolt,.030 over, Badger Flat Head Pistons w/ valve relief, Melling high performance street cam, GM Cast Vortec Heads, Edelbrock RPM Air Gap Intake, Edelbrock 600cfm w/ electric choke, GM HEI w/ vacuum advance, Weiand Low Profile Air Cleaner, Mallory 5 port Fuel Pressure Regulator, Mr. Gasket Throttle Cable Bracket, Corvette Shift Servo, 16" IROC Wheels, Every thing else is STOCK
Soon: 3.73 or 3.42, Gears, Hoosier Q/T

 

its got about 130,000. and it does have an oil leak that i need to get fixed.