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[rasmusmi]

My 2003 SERK2 has had SYN3 in it since about 1500 miles (it has 13,500 miles on it now).

I had the bike in for its 12,500 mile interval over the winter, and it seems to be running unusually HOT ever since.  [smiley=nervous.gif]

I got off a ride (normal speeds) today (90 degrees out), and the oil temp gauge read 245 degrees!  

What is the normal temp range for SYN3?

[hd-dude]

 Temps in the 240's are normal for the 103 motors on a hot day

[Midnight Rider]

I'm using the Mobil 1 MT4X 10w40 in one of my bikes (a Ducati) and noticed a 4-5 degree drop in oil temp from the Shell syn it had in it previously. They also make a 20w50 VTWIN, which is what I'm going to use after the 1K service.  There's a whole thread on syn oils under general CVO.  But on a hot day here in Alabama, those kind of temps are not unusual, particularly in traffic. Starts cooking the boys at stoplights....

[kng103]

My 2003 SERK2 has had SYN3 in it since about 1500 miles (it has 13,500 miles on it now).

I had the bike in for its 12,500 mile interval over the winter, and it seems to be running unusually HOT ever since.  [smiley=nervous.gif]

I got off a ride (normal speeds) today (90 degrees out), and the oil temp gauge read 245 degrees!  

What is the normal temp range for SYN3?

mine usually runs about 220 no matter what the outside temp is.
i question the accuracy of those gauges anyway.

[tailup]

1st thing, you said youve run syn3 since 1500 miles, Your bike came with a synthetic harley oil in it from the factory. Have you added anything to your bike such as lower fairings? or any type of fork wind deflectors? The next thing I would ask you to try, which Ive been meaning to tell all,  Since 2001 Ive used royal purple synthetics in all my bikes trans, engine and primary what a noticable difference in all components. It takes away alot of racket (noises) and just does a noticable difference. I beleive it to be the best synthetic oil around. By the way it also tests better than all synthetics, so give it a try, Ken

[103_RK]

03 SERK's did not come with Syn 3.  They changed some of the bikes around then, but not the 03 SERK.  I think the 03 Deuce came with Syn 3.  I changed mine to syn 3 @ 100 miles.  I am thinking of going to Ammsoil.

[Fired00d]

03 SERK's did not come with Syn 3.  They changed some of the bikes around then, but not the 03 SERK.  I think the 03 Deuce came with Syn 3.  I changed mine to syn 3 @ 100 miles.  I am thinking of going to Ammsoil.

Good move. [smiley=xyxthumbs.gif] Amsoil and Mobil V-twin are what a lot of us are using and have had good results.

 [smiley=pumpkin.gif]
Ride Safe,
Fired00d
 [smiley=fireman.gif]

[Michael]

103_RK...

I could have sworn my SERK had Syn3 oil when I bought it new.

I know my SEEG did, but I thought the SERK did too.

[Fired00d]

103_RK...

I could have sworn my SERK had Syn3 oil when I bought it new.

I know my SEEG did, but I thought the SERK did too.

I believe he is right about them not coming w/Syn 3. [smiley=nixweiss.gif] Have a friend that has a SERK², and remember him talking about switching to Syn 3 when my I got my bike.

 [smiley=pumpkin.gif]
Ride Safe,
Fired00d
 [smiley=fireman.gif]