What weight oil to run?
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Just wondering about what weight oil i should run in my 98 TA this summer. I usually run 10 w30 but i`m considering switching to 10 w40 because it would be a thicker oil and lubricate the internals better in the heat. anybody got any input for me?
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10w30 is the max that should be put in LS1's. Anything over that you begin to lose power with the thicker oil roping around the crank robbing power. Don't be afraid to use thinner oil. It still has great protection. I've used 0w30 german oil and it works great. 5w30 would be nice for the summer depending on how hot your location gets in the summer.
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10w30 is the max that should be put in LS1's. Anything over that you begin to lose power with the thicker oil roping around the crank robbing power. Don't be afraid to use thinner oil. It still has great protection. I've used 0w30 german oil and it works great. 5w30 would be nice for the summer depending on how hot your location gets in the summer.
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is this pretty much a stock motor we are talking about ?
if i is use 5w30
if you are close to the 500whp mark on stock short block i would seriously consider using thicker oil. 15w40 or 20w50 this will help preserve you bearings, because thicker oil will act as a cushion for the bearings.
if i is use 5w30
if you are close to the 500whp mark on stock short block i would seriously consider using thicker oil. 15w40 or 20w50 this will help preserve you bearings, because thicker oil will act as a cushion for the bearings.
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i went from 5w30 to 10w40 mobil 1 synthetic to mobil 1 synthetic (I heard the 10 40 was still the better base oil) and it dropped my gas mileage to below 22 from ~30, and gave a noticeable decrease in power.
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is this pretty much a stock motor we are talking about ?
if i is use 5w30
if you are close to the 500whp mark on stock short block i would seriously consider using thicker oil. 15w40 or 20w50 this will help preserve you bearings, because thicker oil will act as a cushion for the bearings.
if i is use 5w30
if you are close to the 500whp mark on stock short block i would seriously consider using thicker oil. 15w40 or 20w50 this will help preserve you bearings, because thicker oil will act as a cushion for the bearings.
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Last edited by LS1IMPULSE; 04-25-2009 at 08:22 PM.
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sounds like there is something else going on with your car, oil isn't going to make a dramatic difference like that.
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20W50
- Oil purpose here isn't to "cusion" - It's to create a thin layer between the two metal surfaces insuring they never touch, there's no need to construct the layer of a thicker oil here causeing a much higher coeficient of friction, unless the clearances are larger than OEM.
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next time you replace an lsd try measuring the play with it dry and when it is lubed up. then you will know what i mean by oil acting as a cushion.
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yes 20w50 and yes oil does act a a cushion on the bearings. i am pretty sure there is a couple of turbo guys running this oil with no problems.
next time you replace an lsd try measuring the play with it dry and when it is lubed up. then you will know what i mean by oil acting as a cushion.
next time you replace an lsd try measuring the play with it dry and when it is lubed up. then you will know what i mean by oil acting as a cushion.
Also, an LSD has MUCH more clearance, which is why gear oil is 90W
Which turbo guys are you thinking of? Any chance they have a built motor? Probably with altered bearing clearances?