[Sboxin]

Joe Gibbs Driven BR Break-In Motor Oil 15-50

We have used this twice in the last 5 years and worked great . . .
The Summit link is just for information - you can buy it from a lot of different suppliers

https://www.summitracing.com/parts/jgr-00106

This is the procedure we used after the 20 minute 2000 RPM run in for the cams/lifters seating
and 24 hour cool down (which is the most important procedure for new/rebuilt cams/lifters)

Engine Break In Procedure - 964 3.8L race engine

We ran the car on the track for break in using Joe Gibbs oil
on Saturday. The procedure was shift at 3K for several laps
then to 4K and 5K with acceleration - deceleration cycles.

On Sunday we changed the oil to Valvoline race oil 20-50. The
oil came out dark gray but no particles on the magnetic drain plugs.
Brian ran the engine to 6K for shifting and did a race practice,
race qualifying and the a 30 minute sprint race, still shifting at 6K.
(what patience he has -- being a back marker...)
NOTE: Oil temp was 210 for break in and during the race on Sunday - air temp 88
After the Sunday race and cool down we drained and sent the oil to the Lab and
refilled with 20-50 Amsoil - which we still use as our race oil

The Joe Gibbs oil I think is mineral oil with no additives . . .


Regards,