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Engine oil  Rating:  Rating
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 Posted: 07-13-2009 01:01 pm
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sjensen24
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The book says the engine need 20w50.  My regular mechanic recently expressed his opinion that a synthetic blend 10w30 is a better choice.  What's the word out there on oil options?

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 Posted: 07-13-2009 01:36 pm
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Brett Gibson JH5 20497
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20-50 for a regular engine that has some miles on it, new engine break in is another matter.

Brett

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 Posted: 07-13-2009 08:40 pm
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John Finch
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Steve, log in to the site and search oil recommendations or ZDDP additives for some additional insight to your quesiton.

John

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 Posted: 07-14-2009 05:57 am
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Sylva
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As I've said before, and without mentioning names, I was advised by several people who were involved in the design of the 900 that the only modern oil to use is Castrol Rs, and never to use Mobil 1.

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 Posted: 07-14-2009 02:25 pm
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Jensen Healey
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Sjensen, It's fun to learn about lubrication and the effect of viscosity on oil pressure and heat build-up. Your mechanic is technically correct but it's nothing to worry about for a street engine.

http://www.jensenhealey.com/forums/view_topic.php?id=1186&forum_id=2&highlight=viscosity

I use Valvoline VR1 20-50 which has the ZDDP and is available at my local auto parts store.

Kurt

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 Posted: 07-15-2009 05:56 pm
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edward_davis
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I also use VR1, and I haven't had any problems with the oil inside the engine so far.  My problem is all the VR1 I leave behind everywhere I go...

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