Engine oil Castrol or OEM Subaru

Castrol Engine oil

I've been using 15w40 diesel motor oil in the AMC/Jeep flat tappet engines for nearly 20 years. Castrol makes a line called GTX Classic that's formulated for flat tappet engines as well

Pros: formulated for flat tappet engines
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Castrol Engine oil

5W-30 Castrol C4, never fails with my Clio. DPF is safe and sound, no soot, no weird smells.

Pros: DPF safe and sound
Cons: no weird smells, no soot
Vehicle: Renault Clio
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Castrol Engine oil
Qwiso
  • Exhaust smoke:
Rating 5.0

Castrol Edge 'Euro Car' 5W-40

Used to get a big white plume on cold starts but no more. Still burn a lot, but not as much

Best oil I've used

Pros: Best oil I've used
Cons: Still burn a lot
Vehicle: BMW
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Castrol Engine oil
Alyksandr_01
  • Engine noise:
Rating 1.0

It is an oil from one of the lowest ranges of Castrol.

It is a 100% mineral oil, which is not good and therefore, in addition to greasing, cleaning and cooling less, it has a much shorter useful life, it needs more frequent changes, it is an oil how little/nothing is worth it for a motorcycle whatever it is.

Cons: shorter useful life
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