1Z pure oil in expansion bottle

[Sleeper_Avant]

pure oil in expansion bottle,

im gona bypass the oil cooler tomorow but have you guys found it common for 1Z`s to crack heads or become pourus?

worst case i gotta do the headgasket but i need it as a daily hack untill later in the year when i put some plans into actions

any input lads?

[caterpillar]

try to change the oilcooler( sqare little box behind the oilfilter with 2 watertubes on) then the cleaning op the coolinsystem....( this is not wery expencive)

[Sleeper_Avant]

cheers, im doing this first thing tomorow when im back at my garage