Posted for "Bryan J. Burr" <bjburr@mwheli.com>:

 I found this at Chiefaircraft.com  What do you all think?  Is anyone
 using one?
 
 For Teledyne Continental thread size 5/8"-18
 
 Part No. PHOTO Description CART Price
 SA S6250
 
 http://www.chiefaircraft.com/Aircraft/OilSystem/Images/Safair_S6250.jpg
 Oil Drain Valve, Continental 5/8-18, Saf-Air
 $59.00
 
 Application:
 
 A-65, A-75, C-75, C75-2, C-85, C90-8F, -12F, -14F, E185, E225
 O-200-A, -B, GO-300-A, C thru E,
 IO-360-A thru D, G thru K, TSIO-360-A thru E, -EB, -F, -FB, -H
 O-470-B, -G, -J thru M, -P thru S, -U, O-470-4, -11, -13, -15
 TSIO-470-B thru D
 IO-520-A, -B, -BA, -C thru F, -J, -L, -M
 TSIO-520-B thru E, -G thru P, -R, -S
 GTSIO-520-C, -D, -F, -H, -K thru M
 C-520
 IO-550
 

[ I use one with Mahar's adapter..
http://lancairlegacy.com/mahar.html  -Rob ]