I Looking some information intercooler oil tank of spitfire vIII

[higlee]

hi. thank you for coming

recently I study spitfire
I want some information sub part on fire wall..

first question is what is name left tank looks like teardrop?

and is it correct name yellow brass drum is intercooler oil tank on right upper side?

and my last question is...
there are picture below
first gruop have an intercooler oil tank
but second gruop is not
why?
what makes diffrent? according to LF,F,HF? OR MERLIN VERSION? OR.....PACKARD OR RR???
I CAN NOT FIND ANYMORE
HELP ME T.T

<<<<< VS >>>>>

 

[mjfur]

The tear drop tank on the left is the Hydraulic Reservoir.
The brass tank on the right looks to be the Header Tank (coolant) for the Intercooler.

The bottom pictures with the Header Tank missing are civilian owned aircraft where the systems may have been modified from their original wartime configuration.
In addition, there may be system differences between the various Merlin and Griffon engined models.

 

[higlee]

thank you so much sir
take care
stay well!

 

[Phantomphixer]

I have some merlin & spitfire experience as an aircraft engineer. I would say this tank is the intercooler header for HF MkVIII MKIX Merlin 70 engined aircraft. As correctly answered by previous reply, the other tank is the hydraulics reservoir for the undercarriage system.