Cessna 172SPHUSR05 Pilot Operating Handbook page 253

CESSNA
MODEL 1 72S
2 . An alternate method that may be used is to premix the
complete alcohol dosage with so me fuel in a separate clean
container
transferring t h is m ixtu re to the tank prior to the fuel operation .
D iethylene glycol mono methyl ether
be carefu l ly m ixed with the fuel i n concentrations between 0 . 1 00/0
( )
m i n i m u m and 0 . 1 5%
Fig u re 8-1 for a D i E G M E-to-fuel m ixing chart.
ANTI-ICING
H EA LTH W H E N B R EATH E D AN DIOR A BSO R B ED
I NTO T H E S KI N .
MIXING O F D i EG M E WITH FUEL IS EXT R E M ELY
I M PORTANT. A CONCENTRATIO N I N EXCESS O F
THAT R ECOM M E N D E D
MAXI M U M)
EFFECTS TO T H E F U E L TAN K S EALANT, A N D
DAMAG E T O O-R I NGS AN D S EALS USED I N T H E
F U E L SYSTEM A N D E N G I N E COM PO N E NTS.
CONCENTRATIO N
R ECOM M E N DE D
M I N I M U M)
TREATM ENT. USE O N LY B L E N D I N G E Q U I P M ENT
THAT
MANU FACTU R E R
P RO PO RTI O N I N G .
Prolonged storage of the airplane wil l result i n a water bu i ldup i n
t h e fuel wh ich "leeches out" t h e additive. An i ndication o f t h i s i s
when an excessive amount o f water accu mulates i n t h e fuel tank
su mps. The concentration can be checked using a d ifferential
refractometer. It is i m perative that the tech nical m anual for the
differential refracto meter be fol lowed explicitly when checking the
additive concentration .
May 30100
HAN D L I NG , SERVICE
(
approxi m ately 2-3
(
maximu m
A
CAUTION
ADDITIVE
A
CAUTION
MAY R ES U LT
OF
(0.1 0%
WI L L R ES U LT
I S R E CO M M E N D E D
TO
&
gallon capacity
( )
D i EG M E
)
of total fuel volume.
IS DANG EROUS
(0.1 50/ 0 BY VOLU M E
I N D ETRI M ENTAL
LESS THAN
BY TOTAL VOL U M E
I N I N E FFECTIVE
BY
O BTA I N PROPER
SECTION 8
MAI NTENANCE
)
and then
compo u nd must
Refer to
I
TO
I
A
I
THAT
T H E
8-1 9