engine oil

hillbilly · #1 PostAuthor: **hillbilly** » Sat May 30, 2009 8:29 pm

being as im about to rebuild mi engine,what oil would anyone recomend,ive been told not to put synthetic oil in it,as it doesent work proply in these old engines. :?:

Magnum1 · #2 PostAuthor: **Magnum1** » Sat May 30, 2009 8:50 pm

I always use GTX in mine. The synthetic stuff leaked!
Rod :??

Reecy · #3 PostAuthor: **Reecy** » Sat May 30, 2009 9:54 pm

Hillbilly,

Castrol GTX everytime on these motors.

Reecy

floydsz1 · #4 PostAuthor: **floydsz1** » Sat May 30, 2009 11:23 pm

castrol gtx seems to be the way to go but i always use semi synthetic. fully synthetic is a waste of money on a road bike. Me mate , a while ago ,explained all about oils, he says semi is up to the same standard as old mineral oil, if not better and wont do any harm. I tend to trust what he says as he works for one of the top tt and bss teams, Mr McGuinness's mechanic and he also races a P and M kawasaki (zed engined). I am Thinking about trying gtx though. Just to see if it makes any difference. :??

as long as its a motorcycle oil and a well known brand it will be ok.
People say they were designed to run on GTX but that was all they had at the time.

Magnum1 · #5 PostAuthor: **Magnum1** » Sun May 31, 2009 6:27 am

I get your point, especially as there was not much choice back in the days, unless you could afford Silkoline and all that stuff, but when I tried semi synthetic it made the clutch slip. I phoned Castrol on the number given on the oil can and they said go back to GTX.
Rod :??

floydsz1 · #6 PostAuthor: **floydsz1** » Sun May 31, 2009 7:47 am

Iv'e never had any problems, but i will try gtx, though its not easy to get any round here. none off the local bike shops sell it so thats why iv'e always used semi synthetic.
The zed's due an oil change about now so ill give it a try.

steve bowdler · #7 PostAuthor: **steve bowdler** » Sun May 31, 2009 8:51 am

Silkoline for me GTX is an engine oil not designed for gear box search previous discussed posts

zed1015 · #8 PostAuthor: **zed1015** » Sun May 31, 2009 9:34 am

I've used silkolene super 4 with no problems or clutch slip and also GTX But i'm gonna use Rock oil TRM20/60 in my project supercharged zed as it's designed for roller bearing cranks . Anyone else used this ??.

BShaw · #9 PostAuthor: **BShaw** » Sun May 31, 2009 9:57 am

GTX cheap as chips .. so you don't mind changing it sooner, I do mine every 1500mls ish.... never had a problem

Al · #10 PostAuthor: Al » Sun May 31, 2009 12:12 pm

Using semi to run in may cause rings not to bed in and caused mine to slip the clutch also.

Run in on mineral ................after that its down to preference and pocket.

AL

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