Topic: solved my head seepage problem but

[use2b]

solved my head seepage problem but hate to say how i did it.

my CB750K6 has had this seepage problem for some time and i got use to just wearing dark pants and wiping off the plastic side covers every 50-100 miles.  switched my oil to this last year and all seepage stopped with no clutch problems at all.
this is just a suggestion and it may not work for everyone but 5K and a year later by bike no longer seeps oil under the head

[ekpent]

 Some people report more leakage with synthetic so consider yourself one of the lucky ones where it healed itself somehow..

[USMC5811]

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[BomberMann650]

Zddp+ yo

[use2b]

Had to google Zddp because i did not know what it was so thanks , and USMC " its a trap" LOL - SSgt 0311 here Vietnam Vet became a 6617 after i got back - Semper Fi
I was very reluctant to post these results and only then after a full year of use.  this may not work for everyone but not being a true mechanic i did not see what i had to loose because the seepage was so bad i was going to have to pull the head even though i suspected the seepage was only coming down around those rubber plugs [ sure they have a name ]
i believe this high millage oil has an additive that swelled or softened the original rubber plugs and now i have no leakage.
never the less this solved my problem and this is the only oil i will use in this bike.
I only use Castrol Actevo X-Tra 4T Synthetic Oil Blend 10W40 in my new CB1100A

[Lostboy Steve]

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Lol it sure is! Is that automobile oil? Jeezus.


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[Lostboy Steve]

Had to google Zddp because i did not know what it was so thanks , and USMC " its a trap" LOL - SSgt 0311 here Vietnam Vet became a 6617 after i got back - Semper Fi
I was very reluctant to post these results and only then after a full year of use.  this may not work for everyone but not being a true mechanic i did not see what i had to loose because the seepage was so bad i was going to have to pull the head even though i suspected the seepage was only coming down around those rubber plugs [ sure they have a name ]
i believe this high millage oil has an additive that swelled or softened the original rubber plugs and now i have no leakage.
never the less this solved my problem and this is the only oil i will use in this bike.
I only use Castrol Actevo X-Tra 4T Synthetic Oil Blend 10W40 in my new CB1100A

I run zddp in everything that doesn't have a converter. I'm also all for unorthodox repair methods. Good to see it worked for you!


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[USMC5811]

I run zddp in everything that doesn't have a converter. I'm also all for unorthodox repair methods. Good to see it worked for you!

If it works, it works


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[Don R]

I considered doing that myself.