Author Topic: 73 CB350F, Danger: Oil Thread!  (Read 1710 times)

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Offline rboe

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73 CB350F, Danger: Oil Thread!
« on: June 17, 2012, 07:35:03 PM »
I've been letting the old oil do the work while I do the initial run in. Today I finally changed the oil (the old oil may have been straight 30W as spec'd in the Clymer manual for hot weather). I had very good luck with Golden Spectro blended oil back in the day so I installed 10W40 Honda Blended Oil.

Fired her up and I swear she ran better: which leads into my question. Would a bike run that much better where a dense guy like me would notice a smoother more willing to rev motor?

On a side note; is there a kit out there to convert these machines (all the SOHC inline fours) to an automotive style spin on filter?


Otherwise; I'd like to avoid the usual oil thread wars if possible.  ::)
1974 CB350F
2008 XR650L
2012 Griso SE

Past iron
1971 Suzuki TS125
1977 Honda CJ360T
1981 Kawasaki 550Ltd
2000 Moto Guzzi Quota

Offline HondaMan

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Re: 73 CB350F, Danger: Oil Thread!
« Reply #1 on: June 17, 2012, 09:48:05 PM »
I've been letting the old oil do the work while I do the initial run in. Today I finally changed the oil (the old oil may have been straight 30W as spec'd in the Clymer manual for hot weather). I had very good luck with Golden Spectro blended oil back in the day so I installed 10W40 Honda Blended Oil.

Fired her up and I swear she ran better: which leads into my question. Would a bike run that much better where a dense guy like me would notice a smoother more willing to rev motor?

On a side note; is there a kit out there to convert these machines (all the SOHC inline fours) to an automotive style spin on filter?


Otherwise; I'd like to avoid the usual oil thread wars if possible.  ::)

Stick with the stock oil filter arrangement: it cools the oil well, especially if you're going to use light oils. Using 10w(anything) in these bikes is seldom a good idea. Use at least 15w(something) to keep the pressure up when hot. Or, use a straight-weight 30, and wait for 10 minutes of run time for it to loosen up and give you back the extra HP.

If you're looking for superior filtering, look to the Filtro brand of oil filters from Britain. They have a finer mesh than the EMGO filters.
See SOHC4shop.com for info about the gadgets I make for these bikes.

The demons are repulsed when a man does good. Use that.
Blood is thicker than water, but motor oil is thicker yet...so, don't mess with my SOHC4, or I might have to hurt you.
Hondaman's creed: "Bikers are family. Treat them accordingly."

Link to Hondaman Ignition: http://forums.sohc4.net/index.php?topic=67543.0

Link to My CB750 Book: https://www.lulu.com/search?adult_audience_rating=00&page=1&pageSize=10&q=my+cb750+book
Link to My CB500/CB550 Book: https://www.lulu.com/search?sortBy=RELEVANCE&page=1&q=my+cb550+book&pageSize=10&adult_audience_rating=00
Link to website: https://sohc4shop.com/  (Note: no longer at www.SOHC4shop.com, moved off WWW. in 2024).

Offline rboe

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Re: 73 CB350F, Danger: Oil Thread!
« Reply #2 on: June 18, 2012, 10:14:30 AM »
Good to know. I'll keep that in mind for the next oil change.

I have stock Honda unit in the now.
1974 CB350F
2008 XR650L
2012 Griso SE

Past iron
1971 Suzuki TS125
1977 Honda CJ360T
1981 Kawasaki 550Ltd
2000 Moto Guzzi Quota