To  the  Man  who  owns— 
a  Buick 
Your  Buick  engine,  because  of  its  large 
reserve  horse  power  and  efficient  cooling 
system,  operates  at  comparatively  low 
temperatures. 
With  Buick  valve-in-head  construction  the 
cooling  area  of  the  combustion  chambers  is  rela¬ 
tively  small.  This,  together  with  compression 
pressure  of  75  lbs.  makes  this  engine  sensitive  to 
any  appreciable  carbon  deposits,  particularly  in 
view  of  the  present  day  fuels.  Where  excessive 
carbon  deposits  exist,  “  pinging ”or  knocking  re¬ 
sults.  To  minimize  carbon  deposits  under  these 
conditions,  your  engine  requires  a  well  refined, 
clean  burning  oil  which  will  be  thoroughly  dis¬ 
tributed  by  the  lubricating  system. 
For  all  Buick  models  (except  1923)  use  Gargoyle 
Mobiloil  Arctic  both  summer  and  winter. 
The  1923  Buick  engine  differs  from  previous 
models,  in  so  far  as  lubrication  is  concerned.  The 
splash  troughs  are  covered,  leaving  a  slot  through 
which  the  splash  dipper  passes  to  project  the  lu¬ 
bricant.  This  baffled  splash  trough  design  appreci¬ 
ably  reduces  the  quantity  of  oil  distributed  so  that 
the  lubricating  oil  will  not  splash  to  the  cylinders 
in  excess  quantities  or  reach  the  combustion 
chambers  too  freely. 
The  two  center  crankshaft  bearings  are  supplied 
with  oil  under  pressure. 
These  changes  in  the  1923  Buick  construction 
permit  the  use  in  summer  of  an  oil  heavier  in  body 
and  richer  in  character  than  heretofore  without  the 
possibility  of  objectionable  carbon  accumulations. 
Hence,  for  the  1923  Buick,  Gargoyle  Mobiloil 
“A”  in  summer  and  Gargoyle  Mobiloil  Arctic  in 
winter  will  insure  correct  lubrication. 
a  Willys-Knight 
Your  Willys-Knight  engine,  due  to  its  sleeve  valve 
construction,  operates  at  high  piston  temperatures. 
Heat  in  internal  combustion  engines  must  be 
transferred  from  the  piston  through  the  cylinder 
wall  to  the  cooling  water  in  the  water  jackets. 
Unlike  the  poppet  valve  engine  which  has  its 
piston  rings  in  direct  contact  with  the  oil  film  on 
the  cylinder  walls,  the  Knight  type  engine  must 
transfer  its  piston  heat  through  tzvo  sleeves  and 
three  oil  films  before  it  reaches  the  cylinder  walls 
to  be  absorbed  by  the  water  in  the  cooling  system. 
Retarded  heat  flow  means  higher  piston,  piston 
ring  and  sleeve  temperatures.  Heavier  oils  are 
required  to  meet  this  heat  condition.  Gargoyle 
Mobiloil  “B,”  which  is  heavy  in  body  and  pos¬ 
sesses  unusual  heat  resisting  qualities,  adequately 
meets  this  condition  in  summer  temperatures. 
Oils  of  lighter  body  or  inferior  quality  will  not 
withstand  these  high  piston  and  sleeve  tempera¬ 
tures.  “Dry  spots”  are  liable  to  occur  and  lead  to 
scoring  of  pistons,  sleeves  and  cylinder  walls. 
Winter  Lubrication:  Cold  weather  materially  re¬ 
duces  the  operating  temperatures  and  emphasizes 
the  need  for  ease  in  starting  and  thorough  oil  dis¬ 
tribution  under  low  temperatures. 
The  large  frictional  areas  in  a  Knight  engine, 
together  with  the  location  of  the  oil  pump  above 
the  oil  level  (except  1923  models)  are  factors  of 
importance  in  determining  the  correct  oil  for 
winter. 
Gargoyle  Mobiloil  “A”  possesses  greater  fluidity  under  low 
temperatures,  and  will  be  distributed  by  the  lubricating  sys¬ 
tem  in  winter  weather. 
Its  use  permits  easier  sleeve  action  and  affords  adequate 
lubrication  of  the  sleeves  and  pistons. 
For  Willys-Knight  lubrication,  therefore,  use  Gargoyle 
Mobiloil  “B”  in  summer  and  Gargoyle  Mobiloil  “A”  in 
winter. 
a  Ford 
Your  Chevrolet  490  engine 
is  of  valve-in-head  construc¬ 
tion  and  designed  for  high 
compression  pressures  of  approximately  87  pounds. 
The  lubricating  system  is  of  the  splash  circulat¬ 
ing  type.  The  gear  type  oil  pump  is  in  an  ex¬ 
posed  position  directly  in  back  of  the  radiator, 
and  is  considerably  above  the  level  of  the  oil  in 
the  reservoir.  There  are  long  lengths  of  exposed 
oil  piping  on  both  the  suction  and  discharge  sides 
of  the  pump. 
All  engine  parts  except  the  centre  crank  shaft 
bearing  are  lubricated  by  an  oil  mist  caused  by  the 
dipping  of  the  connecting  rod  splashers  in  the  oil 
troughs  provided  under  each  cylinder.  Oil  is  forced 
a  Chevrolet  490 
under  pressure  to  the  centre 
crank  shaft  bearing. 
Carbon  deposits  in  this  en¬ 
gine,  because  of  the  high  compression  pressures  and 
combustion  chamber  construction,  are  particular¬ 
ly  objectionable.  Correct  lubrication  is  essential 
to  the  maintenance  of  high  efficiency.  Gargoyle 
Mobiloil  Arctic  will  leave  a  minimum  of  carbon 
deposits,  and  is  of  the  correct  body  and  character 
to  provide  adequate  engine  lubrication  under  all 
operating  conditions. 
The  use  of  Gargoyle  Mobiloil  Arctic  both  sum¬ 
mer  and  winter  will  assure  correct  engine  lubrica¬ 
tion  and  lead  to  the  satisfactory  performance  you 
have  a  right  to  expect  of  your  Chevrolet. 
In  design,  construction,  operation,  and  lubrica¬ 
tion,  the  Ford  is  unique.  The  engine  oil  must  ade¬ 
quately  and  efficiently  lubricate  both  transmission 
and  multiple  disc  clutch. 
In  Ford  engine  lubrication  the  following  points 
must  be  considered: 
(1)  The  Ford  connecting  rod  bearings  have  no 
oil  holes  or  oil  grooves,  nor  are  the  lower  ends 
of  the  connecting  rods  equipped  with  oil  dip¬ 
pers  or  splashers.  Hence  the  need  for  oil 
which  atomizes  readily  and  distributes  freely 
throughout  the  entire  bearing  area. 
(2)  The  Ford  pistons  over-run  the  valve  seat 
level.  Any  excess  of  oil  carried  up  by  the 
pistons  readily  finds  its  way  onto  the  valves 
and  seats.  Hence  the  need  of  a  clean-burning 
and  non-carbon  forming  lubricant.  Other¬ 
wise  gumming  of  the  valves  results. 
(3)  The  Ford  Planeta  ry  transmission  operates 
in  a  bath  of  engine  oil.  The  close-fitting 
sleeves  and  bushings  demand  a  free-flowing 
oil  of  correct  body  to  insure  thorough  distri¬ 
bution  to  these  parts. 
(4)  The  Ford  multiple  disc  clutch  operates  con¬ 
tinually  in  a  bath  of  engine  oil.  A  free-flow¬ 
ing  oil  of  the  correct  body  and  character  is 
necessary  to  assure  positive,  quick  engage¬ 
ment  with  no  slipping  and  an  instantaneous 
release  of  the  clutch  without  dragging. 
(5)  Chattering  of  Ford  transmission  bands 
comes  from  incorrectly  adjusted  bands  or 
worn  out  linings,  and  is  aggravated  by  un¬ 
burned  fuel  mixed  with  the  lubricating  oil. 
In  such  cases  the  diluted  oil  should  be  re¬ 
placed  with  fresh  oil  and  the  bands  correctly 
adjusted  or  the  linings  renewed.  To  attempt 
to  remedy  such  mechanical  conditions  by  the 
use  of  so-called  “anti-chattering”  oils  con¬ 
taining  foreign  material  which  may  separate, 
or  lard  oil,  wool  grease  or  other  animal  fats 
which  decompose  under  heat,  is  obviously 
wrong  and  likely  to  cause  gumming  of  the 
valve  stems,  carbon  deposits  and  other 
troubles. 
Gargoyle  Mobiloil  “E”  is  free  from  foreign  ma¬ 
terial  or  animal  fats.  It  is  of  the  correct  body, 
character  and  fluidity  and  especially  manufac¬ 
tured  to  scientifically  meet  the  exacting  require¬ 
ments  of  Ford  cars  both  summer  and  winter. 
If  your  car  has  not  been  mentioned  here,  see  our  complete 
Chart  of  automobile  recommendations.  Garages  and  dealers 
have  this  Chart  on  their  walls.  It  appears  also  in  our  booklet 
"CORRECT  LUBRICATION which  we  will  gladly  send 
you  on  request.  Address  our  nearest  branch. 
Don’t  say,  "Give  me 
a  quart  of 
oil .  ” 
Ask  for 
WARNING! 
Don’t  be  misled  by  some  similar  sound- 
ing  name.  Look  on  the  container  for 
the  correct  name  Mobiloil  (not  Mobile) 
and  for  the  red  gargoyle. 
Don’t  believe  false  statements  that 
some  other  oil  is  identical  with  Gar¬ 
goyle  Mobiloil.  Gargoyle  Mobiloil  is 
made  only  by  the  Vacuum  Oil  Com¬ 
pany  in  its  own  refineries,  and  is 
never  sold  under  any  other  name. 
Address  our 
nearest  branch: 
New  York 
(Main  Office) 
Boston 
Philadelphia 
Pittsburgh 
Buffalo 
Rochester 
Chicago 
Detroit 
Indianapolis 
Milwaukee 
Minneapolis 
Des  Moines 
Kansas  City,  Kan. 
Dallas 
Oklahoma  City 
VACUUM  OIL  COMPANY 
