Pontiac - Street No question too basic here!

          
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Old 05-28-2007, 10:27 AM
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Bronze66 Bronze66 is offline
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Default Synthetic oil

I just got my motor back together and in the car. Should get it running in the next few days. After a 500mi or so break in I'm thinking about using Mobil1 or the like synthetic oils. Any reason not to do this? It's a 389 mild build,red line 5900rpm, moly rings, rod clearences .021-.023, mains .022-.025. I don't expect any leaks from this motor. BOP rear main seal. It's basically a street motor with limited strip use.

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Old 05-28-2007, 10:31 AM
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Billy177 Billy177 is offline
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its fine to use as long as you use something with zinc to protect your cam

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Old 05-28-2007, 01:30 PM
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glhs#116 glhs#116 is offline
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If it's well buttoned up, go for it! Usually, the biggest obstacle to going synthetic in these motors is the old seals starting to leak with the more slippery lube. For a newly rebuilt motor should not be a problem.

Sam

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