changed oil and......

[bigbuck90]

I changed the oil in my 400ex and, i ws going to put ams oil 20-50 but my dealer didnt have none.So i had to get spectro gold 20-50 syn and potrollyum mix.I was wondering if this oil is any good,before i ride my ex to much.Also i just put on a alba slip on cut down to a shorty,i bump the main jet up 4 size's from a.248 to a 252 i was wondering if i jetted up enough.Also were does the shorty help out the motor?because it seems like it has the same top end pull as stock,and i thought it would gain...thanks

[vett_09]

Spectro Gold is a great oil. It's the only oil that I've ran in mine for the past two years. You should have no worries about it.

[bigbuck90]

i mean i whent from a 148 main to a 152 main.Is this good or should i go up more?

[Kaleigh]

are you running lean.. if so.. then you need to bump the jet up..

[blasterandy]

it all depends on how high above/ below sea level, average temp out side and the mods on the machine, i ran a 152 when i only had a s/o pipe, but once you get an air filter it is always a good rule of thumb to not run anything under a 154, personally i would rather be rich than lean. i would say 154 though a 152 you ought to be fine with. I wouldn' t butcher you pipe just buy a good one like an HMF to start with.


:devil: and with a 248 you ought not to be too lean. :D

[JPhonda]

is it just me or does anyone else find amsoil is highly over prices and over rated? I mean they make great oil but the price is just outrageous. when i use to use that for my 400ex oil changes would cost just as much as for my car, and my car uses twice the oil.