Hey guys, long time lurker here just looking to see what you guys think about the oil type that was recommended to me for my mild LS2 build. Let me give you the rundown on the engine and how it's used:
-2007 Corvette w/LS2, MZ6 manual trans, about 55k miles. Doesn't burn a drop of oil.
-Cam Motion cam with 227/235 duration, ~.615/.615 lift, 113+2 advance. Lot's of lope with around 8.5* of valve overlap.
-Johnson 2110 drop in lifters
-Melling high pressure oil pump (10295 iirc). Cold oil pressure = ~45lbs, operating temp ~34lbs
-C5R timing chain + damper setup
-Upgraded pushrods (can't remember length, brand)
-Trunion bearing upgrade for the rockers
-BTR double valve springs w/titanium retainers
-1 7/8 American Racing Headers to full 2 1/2 X-Pipe, catback
-Stock intake, stock 243 heads, stock bottom end
-Custom tune
-Located in the SF Bay Area (for general weather and altitude questions)
The car is usually used as a weekend car but lately I've been using it for the daily commute. I originally built the engine to be a mean street / backroads car that would eventually be an amateur road race setup with an emphasis on reliability as I do romp on it pretty good every few times I take it out but I wasn't willing to sacrifice reliability for power. As per my tuner I'm running Redline 10w40 and change the oil every 2500 miles (as per his recommendation) but can't help thinking that it's a bit thick of an oil for an LS engine? On startup I do have a split second of a clacking sound, it sounds almost like slack in the valvetrain that's being taken up when the lifters are filled with oil, however my tuner said he set the preload of the lifters on the looser side so they don't pump up at high rpm. Regardless, this is a daily street driven car that I use to take long road trips with the occasional freeway or backroads race. Considering that 5w30 Mobil 1 is the factory fill, would I be better off with a slightly thinner Redline 5w40 (vs. the 10w40 I'm using now), or perhaps something else entirely?
TIA for your answers.
-2007 Corvette w/LS2, MZ6 manual trans, about 55k miles. Doesn't burn a drop of oil.
-Cam Motion cam with 227/235 duration, ~.615/.615 lift, 113+2 advance. Lot's of lope with around 8.5* of valve overlap.
-Johnson 2110 drop in lifters
-Melling high pressure oil pump (10295 iirc). Cold oil pressure = ~45lbs, operating temp ~34lbs
-C5R timing chain + damper setup
-Upgraded pushrods (can't remember length, brand)
-Trunion bearing upgrade for the rockers
-BTR double valve springs w/titanium retainers
-1 7/8 American Racing Headers to full 2 1/2 X-Pipe, catback
-Stock intake, stock 243 heads, stock bottom end
-Custom tune
-Located in the SF Bay Area (for general weather and altitude questions)
The car is usually used as a weekend car but lately I've been using it for the daily commute. I originally built the engine to be a mean street / backroads car that would eventually be an amateur road race setup with an emphasis on reliability as I do romp on it pretty good every few times I take it out but I wasn't willing to sacrifice reliability for power. As per my tuner I'm running Redline 10w40 and change the oil every 2500 miles (as per his recommendation) but can't help thinking that it's a bit thick of an oil for an LS engine? On startup I do have a split second of a clacking sound, it sounds almost like slack in the valvetrain that's being taken up when the lifters are filled with oil, however my tuner said he set the preload of the lifters on the looser side so they don't pump up at high rpm. Regardless, this is a daily street driven car that I use to take long road trips with the occasional freeway or backroads race. Considering that 5w30 Mobil 1 is the factory fill, would I be better off with a slightly thinner Redline 5w40 (vs. the 10w40 I'm using now), or perhaps something else entirely?
TIA for your answers.
Last edited: