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Hi,
My son just installed a new Excel Super Coil and MSD 6 off road ignition module on his jeep. It was not using hardly any oil until the MSD upgrade. Could this be causing blow-by? Question: What can we add to the oil safely to slow down the amount being used or blow-by? We are presently using Valvoline 10-30w in the jeep. Thanks for any help. P.S. The compression is good. I'm wondering about oil weights or additive to slow the consumption down. The jeep is not really burning oil.




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What is the year/model/mileage of the Jeep?

I can look up the current oil viscosity recommended. A higher viscosity oil might stay in the engine longer and might be less volatile. But a lower viscosity oil might lower oil temperature reducing volatility.

Which 10w30 Valvoline are you using? From www.valvoline.com and looking at NOACK volatility:

VALVOLINE PREMIUM CONVENTIONAL MOTOR OIL Noack % off @ 250°C is <15.0

VALVOLINE NextGen™ CONVENTIONAL MOTOR OIL Noack % off @ 250°C is 11.3.

VALVOLINE MaxLife™ Motor Oil Noack % off @ 250C is 11

VALVOLINE NextGen MaxLife™ Motor Oil Noack % off @ 250C is 11

VALVOLINE MaxLife™ Synthetic Motor Oil Noack % off @ 250C is 7

VALVOLINE DURABLEND MOTOR OIL Noack % off @ 250°C is 12

VALVOLINE SYNPOWER MOTOR OIL NOACK, wt. % loss is <10

For comparison, AMSOIL ATM full chemical synthetic 10w30 http://www.amsoil.com/storefront/atm.aspx?zo=1181889 NOACK Volatility, % weight loss (g/100g) (ASTM D-5800) is a lower 5.7 which could reduce oil consumption if volatility is an issue.
Last edited by timvipond
quote:
Originally posted by Tim Vipond:
What is the year/model/mileage of the Jeep?

I can look up the current oil viscosity recommended. A higher viscosity oil might stay in the engine longer and might be less volatile. But a lower viscosity oil might lower oil temperature reducing volatility.

Which 10w30 Valvoline are you using? From www.valvoline.com and looking at NOACK volatility:

VALVOLINE PREMIUM CONVENTIONAL MOTOR OIL Noack % off @ 250°C is <15.0

VALVOLINE NextGen™ CONVENTIONAL MOTOR OIL Noack % off @ 250°C is 11.3.

VALVOLINE MaxLife™ Motor Oil Noack % off @ 250C is 11

VALVOLINE NextGen MaxLife™ Motor Oil Noack % off @ 250C is 11

VALVOLINE MaxLife™ Synthetic Motor Oil Noack % off @ 250C is 7

VALVOLINE DURABLEND MOTOR OIL Noack % off @ 250°C is 12

VALVOLINE SYNPOWER MOTOR OIL NOACK, wt. % loss is <10

For comparison, AMSOIL ATM full chemical synthetic 10w30 http://www.amsoil.com/storefront/atm.aspx?zo=1181889 NOACK Volatility, % weight loss (g/100g) (ASTM D-5800) is a lower 5.7 which could reduce oil consumption if volatility is an issue.


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Tim, you are using this board for advertising purposes again, did you get permission from Valvoline to put up that Link.

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