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Oil change for an 11b


Povertycove

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I'm fairly new to Franklins, so I'm going to ask a fairly basic question: what oil weight and type is recommended for a series 11b? I've been running a conventional multi viscosity in it, with a high concentration of Marvel, in order to get some suspected gum off the valves. It seems to have worked, so now I want to change the oil for the season. I run synthetic oil in my series 15 convertible, as recommended by several club members. But this 11b boattail is a different creature. What's the consensus?

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Guest richentee

I'll step into the brian patch here, even tho I do not own an 11. Probably what works well in your S15 will likely do well in your 11B.

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I have been told that if you want to start a long discussion ask a Franklin guy about oils!!!!

I use only synthetic oils in my cars. They stand up to higher heat and lubricate so well that you can not break in new rings with it.

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Yeah. I bothered to read all the oil advice in the past Franklin Tech notes, and its all over the place. When I bought my 31, down in Falmouth, I was told to maintain synthetic, which I've done. Getting this 27 boattail sorted out, down here in Florida, has been a challenge. For the time being I decided to use my standard 15-40 weight and Marvel combination until I believe that the valves are thoroughly de-gummed. Then I may switch to synthetic for the 11b. Perhaps at the Trek Ill ask the oil question ... See how many different responses ill get. Ha.

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If you're concerned about valves, know that the oil in your crankcase doesn't get anywhere near your valves. That being said, I like conventional non-detergent 30W when I can find it.

If you're talking about oil on your valves and walking beam pads, then stick to Mobil 1.

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