Hi everybody,
May I re-up this old thread?
I got Lexus IS250 2013 3rd Gen. with 43000km.
Manual recommendations are xW20 or under special condition – more viscous oils like xW30.
I drive it spiritedly from suburban to city with heavy traffic (when road is free I drive it hard).
I used to fill my previous cars with Mobil 1 products, so I got an option of 4 oil types to buy:
Mobil 1 AFS 0W20
Mobil 1 X1 5W30
Mobil 1 FS 0W40
Mobil 1 FS 5W30
All of these are well known, except FS 5W30 with properties:
Viscosity, cSt (ASTM D445)@ 40º C 69.6
Flash Point, ºC (ASTM D92) 245
Pour Point, ºC (ASTM D97) -42
Density @15 ºC, g/ml (ASTM D4052) 0.849
Sulphated Ash, wt% (ASTM D874) 1,47
FS 5W30
I see to change oil every 7000-7500km and add Techron concentrate plus in a gas tank every 10000km.
So which oil do you recommend to use in this 4gr-fse with direct injection common problem?
Does FS5W30 with higher sulphated ash affect engine stronger compare to X1 5W30?