Johnson Service Bulletin 970 - OMC Accessories Break-In Lubricant

Issued August 15, 1963, this bulletin revised the application instructions for OMC Accessories break-in lubricant containing molybdenum disulfide. It also cautioned against using the product as an assembly lubricant.

Johnson Motors gray Service Bulletin letterhead

August 15, 1963

SUBJECT:  OMC ACCESSORIES Break-in Lubricant (containing Molybdenum Disulfide), with new instructions.

Factory photograph of OMC Accessories break-in lubricant gallon and pint cans
OMC ACCESSORIES
BREAK-IN LUBRICANT

This product is a break-in lubricant containing MOLYBDENUM DISULFIDE.

Because of the very efficient antifriction qualities of this product, its use is highly effective in preventing piston sticking when properly applied. We recommend that all (1) new engines, (2) powerhead replacements (3) powerheads overhauled with new pistons (whether rebored or not), be treated in accordance with the following instructions prior to delivery to the customer:

INSTRUCTIONS FOR USING OMC ACCESSORIES BREAK-IN OIL CONTAINING MOLYBDENUM DISULFIDE. (SHAKE THOROUGHLY BEFORE EACH APPLICATION).

In engines up to 45 cubic inch displacement use 1/6 oz. For engines over 45 cubic inch, increase proportionally and distribute the amount equally through the carburetor intake or intakes. Application should be made immediately after starting the engine. Run engine at fast idle (about 1/4 throttle) while fogging to insure distribution of mixture throughout the powerhead.

If engine is to be stored after the break-in operation, apply 3/4 oz. of OMC Accessories Rust Preventive oil through each carburetor intake. Apply rapidly with engine running at half throttle and stop engine immediately, so mixture will not go through engine and out the exhaust.

Page 2
SB-970

CAUTION:  Do not use molybdenum disulfide in any form or mixture as an assembly lubricant on (1) threads of screws, studs, nuts, and bolts, (2) tapers of flywheel hubs and crankshafts, nor any other points or areas which are dependent upon friction for holding power. USE IT AS RECOMMENDED IN THE AFORESAID INSTRUCTIONS ONLY AFTER ASSEMBLY IN THE NORMAL MANNER.

NOTE:  These new instructions recommending smaller quantities of break-in lubricant should be used instead of instructions presently appearing on the cans. This is possible due to improved formulation. Instructions on cans will be changed in near future.

Because of the above product's effectiveness in preventing piston sticking, we urge that all Dealers order a supply as soon as possible to alleviate this problem.

OMC ACCESSORIES BREAK-IN LUBRICANT is available in 1 pint and 1 gallon cans. Order by part number as follows:

171634, Break-in Lubricant, dealer net $2.60 pint can, (24 cans per case).
171635, Break-in Lubricant, dealer net $15.60 gallon can, (4 gallon cans per case).

Dealer discount will not apply to the purchase of either part 171634 or 171635, since they are dealer net items.

JOHNSON MOTORS
Robert Compton
Administrative Assistant

RC:eb

NOTE:  Post on your Miscellaneous Index.

Historical parts reference

OMC Accessories break-in lubricant: 171634 (pint can) and 171635 (gallon can). The original bulletin lists dealer net prices of $2.60 and $15.60 respectively. These are historical prices, not current offers.