Beechcraft Baron G58 Pilot Operating Handbook page 416

Section 8
Handling, Serv & Maint
sumption has not stabilized at this point, MIL-L-6082 Mineral
Oil may be used.
After the break-in period, when oil consumption has stabilized,
MIL-L-22851 Ashless Dispersant Oil should be used. Oils must
meet the latest revision of Teledyne Continental Motors Corpo-
ration Specification MHS-24B or current applicable Teledyne
Continental Service Bulletin. Refer to APPROVED ENGINE
OILS in this section for a list of approved oils.
Do not exceed 25 hours of operation with
factory break-in oil (MIL-C-6529, Type II,
Multi viscosity, 20W-50 Corrosion-preven-
tative). When changing to MIL-L-22851
Ashless Dispersant oil, change the oil and
oil filter as previously described.
Failure to remove the corrosion-preventative oil and replace
the oil filter within the time interval specified may cause varnish
deposits to form on the pistons and cylinder walls and deterio-
rate the filter element.
When operating temperatures overlap indicated ranges, use
the lighter grade of oil.
8-18
Model G58
April, 2008