New 2015 Rubicon: Break-in Questions

First, I know this is a HIGHLY debated topic and I apologize in advance.

My 2015 Rubicon is running great so far, only have 6 miles and 2 hours on it. So happy I didn’t get the Can-Am!

My dealer recommend I wait to about 1,500 miles before switching to full synthetic oil, but how should I run the engine during the break-in period? How long is the break-in period? There’s NOTHING in the manual that mentions a break-in procedure. Some say baby it while others say run it hard so the pistons seat themselves properly?

Also, which oil should I use up to 1,500 miles? When should I do my first oil change?

Read this VERY interesting article about why it should be broken in hard. I’m sure a lot of you have read it before:

Break In Secrets–How To Break In New Motorcycle and Car Engines For More Power

My quick opinion on QSC clutch kit

2013 sportsman 850 with 28" zillas

Just put the kit in and now finally it will pull a wheelie with no leaning back or pulling on the bars.

But it takes a little while for the rpms to come up then it will come right over if u don’t let off a bit.

Question should I crank up the engagement?
Currently thin shim is in 1800 engagement.

My quick opinion on QSC clutch kit

2013 sportsman 850 with 28" zillas

Just put the kit in and now finally it will pull a wheelie with no leaning back or pulling on the bars.

But it takes a little while for the rpms to come up then it will come right over if u don’t let off a bit.

Question should I crank up the engagement?
Currently thin shim is in 1800 engagement.

Rear end popping

Was water wheeling through a pond and heard a loud pop and now whenever you drive it she makes a popping noise coming from somewhere in the back. I’m pretty sure it’s the rear diff but could it be a transmission. Just want to be 100% sure before I spend a bunch of money fixing something that’s not the problem. Also should I Just replace the whole diff or would it be cheaper just to replace the gears inside of it?

350 grizzly starter relay probs

So the starter relay went bad, normal clicking sounds while trying to start it. Bought and installed a new one, now when i turn on the key and on/off switch to the on position the reverse indicator light comes on, if i then press the start button the temp light comes on, but it doesnt try and turn over at all, or click or anything. Battery is fine,12.86v, fuses are fine. What am i missing? Its an 06 4wd.I,ve checked the owners manual and the service manual and couldnt find anything about the R and temp light coming on with a certain problem. Any help would be appreciated! Thanks!

major motor questions

hello i have a 2001 400ex and it was running very hot in the woods one day and it just shut off and i found out the spark plug blew out of the head and i took it all apart getting ready for a rebuild (before i saw the spark plug dont ask me how i didnt see that first) (but im happy i did tear it down) and i saw that the entire inside of my head after the carb boot intake side of my motor was white except for the intake valves but the exhaust valves were white and so is the inside of my header pipe also so was my spark plug ( does that mean its running lean if so what exactly is lean too much fuel or not enough) and i think my oil wasnt circulating how do i find out if my oil pump is bad and i took out the oil drain bolt for the case and no oil came out but it did come out of the bottom hose going into the case. I put a new filter in it and it was filled with oil but its a car filter so it got blocked up i think but its a k&n 113 thats what was in my quad before but it says atv me new filter does not

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