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High Mileage Oil Weight

jnj

Well-known member
Joined
May 12, 2004
Messages
107
Location
SoCal
Corvette
2001 Magnetic Red Convertible
My 2001 has just over 192,000 and is starting to lose some oil between changes (5000 miles)
I use the recommended 5w30 Full Synthetic.
My question is with that mileage should I step up to a heavier oil like 10w30 or perhaps something else.

As for where its going, there doesn't seem to be any leaks, nor is there any blue smoke upon start up or full throttle passing

Thanks in advance
 

LLC5

Well-known member
Joined
Sep 28, 2004
Messages
2,299
Location
Wa.
Corvette
98 black 6spd convert.
My 2001 has just over 192,000 and is starting to lose some oil between changes (5000 miles)
I use the recommended 5w30 Full Synthetic.
My question is with that mileage should I step up to a heavier oil like 10w30 or perhaps something else.

As for where its going, there doesn't seem to be any leaks, nor is there any blue smoke upon start up or full throttle passing

Thanks in advance


I wouldn’t. If you want to switch viscosity’s I would do a 5W-40 but not a 10W for cold start up. How much oil are you using in 1K miles?
 

jnj

Well-known member
Joined
May 12, 2004
Messages
107
Location
SoCal
Corvette
2001 Magnetic Red Convertible
I wouldn’t. If you want to switch viscosity’s I would do a 5W-40 but not a 10W for cold start up. How much oil are you using in 1K miles?
Losing maybe up to 1 Qt in more like 2k miles.
Just enough for the Low Oil Level to show on DIC.
Stick is at the ADD hole
 

LLC5

Well-known member
Joined
Sep 28, 2004
Messages
2,299
Location
Wa.
Corvette
98 black 6spd convert.
Losing maybe up to 1 Qt in more like 2k miles.
Just enough for the Low Oil Level to show on DIC.
Stick is at the ADD hole



.5 qt in 1K miles isn't much for 190K. I doubt a heavier viscosity oil will help, but you could try it.
 

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