Hello again,which flush is better to pour into the engine, 109 or 105,109 are easier for me to get (it's like niva in the usa) but i found it
I'd recommend the 105 if you can get it... the 109 is aimed a little more at higher mileage motors that might have some slop in them from age. (there's that 30 year old Niva or Wrangler again!) I've used the 105 with good results, I've never used the 109...