Which oil to use?

Re: Which oil to use?

Postby daves79x » Tue Dec 02, 2014 8:30 am

Most aftermarket plates have the spiral pattern as the Honda ones - don't know how you would tell them apart. But if the grooves are at 90 degrees to the plate, then they are for sure aftermarket.

Dave
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Re: Which oil to use?

Postby bigbob81 » Fri Apr 03, 2015 1:54 pm

Hey guys!
Anyone ever thought of using Zmax in their CBX engines? I have an 81, and am sure it has burned lots of
ethanol fuel. The carbs were full of gunk when i drained the bowls.(they are over at Old School Carbs for a complete
rebuild) I wonder if the valves & piston tops may be gunky too. It ran really well before I put it up, with the
exception of a hanging idle after warm up. Any thoughts? I don't want to put anything in that would cause it
harm. Zmax seems to be a very thin micro-oil. Don't want it seeping past any of the oil gallery plugs
in the bottom end.
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Re: Which oil to use?

Postby WEAtkins » Mon May 30, 2016 10:35 am

Has anyone had any experience with running silkolene 4t oil? I am on an 81 coming up on 80,000 miles. Would the 20/50 be fine for summer? Thanks Bill
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Re: Which oil to use?

Postby chrispyduck » Thu Oct 18, 2018 5:14 pm

Just catching up on this old thread as i am new to cbx ownership. Despite my preference towards 10/40 semi synthetic for my bikes (Z1, GPZ 900) i have been advised by the previous owner (ex boss of Honda UK) and ythe UK owners club to use a high quality 20/50 mineral oil.

Can someone confirm this is ok for my bike?

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Re: Which oil to use?

Postby Larry Zimmer » Thu Oct 18, 2018 9:42 pm

To bigbob: I don't know anything about the Zmax oil. However, I thought I'd pass this on to you with the carb rebuild. (If you hadn't thought of it.) I highly recommend replacing the rubber 'manifolds' that connect the carbs to the engine. After 40 years and how many miles, those things become hard as bricks; and, they don't seal nearly as well as one might think they are. A few bucks. But, worth the trouble. Check with Bill Brint at TIMS. Be certain to tell him which model year as there is a difference.
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