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| | | Forums66 Topics128,154 Posts1,056,837 Members48,456 | | Most Online14,466
Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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For helping keep this great
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on the Internet for over 30 years! and not clogged down
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| | | | Joined: May 2015 Posts: 4 New Guy | | New Guy Joined: May 2015 Posts: 4 | I bought a 3100 with an '59 216 that was rebuilt 4 years ago and had about 100 miles on it. I changed the oil and used Royal Purple break-in oil. I have put an additional 250 miles on the engine. Any opinions how many miles to run break-in oil? Note the engine did not come equipped with the optional oil filter. Also, any opinions on a Royal Purple High Performance Synthetic 5-30w for this engine long term? | | |
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