915 Break in Process

[Thrlls]

I know this was discussed somewhere and I tried to do a search...(shifting) (915) (break) and can't seem to find a definitive process.
I'm having my trans rebuilt and would like to get all my ducks in line when it's done.

Peter Z and others mentioned in another thread about the oil they use, and Peter also mentioned to take it easy on the trans for the first couple hundred miles or so.
I'll definitely apply his & others suggestions, but what I want to know is:

• Do I shift up and down (1st - 5th) as much as possible?
• Do I do just the opposite (5th - 1st) as much as possible?
• Do I stay in any gear for a length of time (each being equal in time)?
• Or, do I just drive it as normal (in my case not using 5th or 4th very often) while using finesse?

I thought I read somewhere (what I was searching for) that during the break in period one should shift from 1st to 2nd a bunch of times (100?) with the car parked and engine off???
FYI - I do heel & toe and dbl clutch when downshifting.

Thanks in advance

[Forza]

Wow, I never thought there were so many possible permutations of 915 break-in behavior ... if the above choices were asked as a poll, I'd simply vote for the last one given the choices available. There's nothing magically delicious about break-in periods--just be mechanically sympathetic (e.g., no excessive revs, etc.). To a fault, the 915 is a tremendously communicative transaxle. It will tell you far better than anyone here how it--and you--are doing every shift, without exception!

[sc_rufctr]

Just drive it normal... Whatever you do don't labour the engine in 5th gear. Or any gear for that matter.

You'll often see drivers get it into the highest gear as quickly as possible.
I guess "we" do this because of the cost of fuel but this has a detrimental effect on any car.

I never use 5th unless I'm on a stretch of road with an 80kmh greater speed limit.
that means around town at 60kms I use up to forth only.

80kmh = 50mph
60kmh = 37mph
50kmh = 31mph

Don't shift into gear with the car parked and the engine off.
It just wears the synchros and slider for no good reason and they're not designed to work this way.

Change the oil after about 500 miles.

[Thrlls]

Originally Posted by sc_rufctr

Just drive it normal... Whatever you do don't labour the engine in 5th gear. Or any gear for that matter.

You'll often see drivers get it into the highest gear as quickly as possible.
I guess "we" do this because of the cost of fuel but this has a detrimental effect on any car.

I never use 5th unless I'm on a stretch of road with an 80kmh greater speed limit.
that means around town at 60kms I use up to forth only.

80kmh = 50mph
60kmh = 37mph
50kmh = 31mph

Don't shift into gear with the car parked and the engine off.
It just wears the synchros and slider for no good reason and they're not designed to work this way.

Change the oil after about 500 miles.

Thanks for your input...I hover around 3500 in all gears and I hear you about lugging the engine.
I rarely use 5th unless there's a stretch where I can hit 65 - 70 + mph, but as mentioned this is a rare occasion. I spend most of my time in 3rd...

Not sure why I thought shifting it with the engine off from 1st - 2nd was a procedure of some sort.
Change oil after 500 miles...got it!

[Peter Zimmermann]

Originally Posted by Thrlls

Thanks for your input...I hover around 3500 in all gears and I hear you about lugging the engine.
I rarely use 5th unless there's a stretch where I can hit 65 - 70 + mph, but as mentioned this is a rare occasion. I spend most of my time in 3rd...

Not sure why I thought shifting it with the engine off from 1st - 2nd was a procedure of some sort.

Actually, this is the worst thing that you can do. Engine off = trans gears not rotating. If the internal components aren't turning all that you're doing is wearing away a non-lubricated surface, with the slider's teeth hitting the 1/2 synchro rings in the same place every time, instead of distributing the initial "wear" across the entire synchro ring.