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What's a good SAE 40 wt conventional oil?

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Old 09-14-2008 | 09:01 PM
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Default What's a good SAE 40 wt conventional oil?

I recently had a couple questions.

I do not have a lot of recent testing of ZDDP in the 40wt except for Brad Penn which is loaded with ZDDP.

Penn makes all the 30wt oil for Briggs and Stratton.

It's a real good oil..

http://www.bradpennracing.com/Products/SAE40.html

http://www.bradpennracing.com/Zinc.html

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Old 09-14-2008 | 11:10 PM
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I've been using 40w Valvoline Racing Oil. Is this a good conventional oil? If I change oil every 20 hours, what benefits would I have if I switched to Mobil 1 synthetic silver cap?
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Old 09-15-2008 | 06:06 AM
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I don't know the viscosity of the silver cap but I know that it is a multi-viscosity which will offfer you better oil pumpability at start up (faster oil pressure) and will thin less at temps above 210 F (if it is a XXW40).

Ken
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Old 09-15-2008 | 09:02 AM
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Kendal
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Old 09-15-2008 | 02:07 PM
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VALVOLINE VR-1 change every 20 hrs
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Old 09-15-2008 | 03:54 PM
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Originally Posted by Rebel_Heart
I've been using 40w Valvoline Racing Oil. Is this a good conventional oil? If I change oil every 20 hours, what benefits would I have if I switched to Mobil 1 synthetic silver cap?

Thats what Ive been running in my blower motors since 1995, I havent seen any oiling problems from it
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Old 09-15-2008 | 04:11 PM
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Swepco!
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Old 09-15-2008 | 04:50 PM
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All we use in our personal boats and some customer boats is the Vavoline VR1 40 w.
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Old 09-15-2008 | 07:15 PM
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Shell Rotella T 25/40
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Old 09-16-2008 | 07:36 AM
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VR1 40 10 years no oil related failures
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