5-30W oil on 5.0 SC ??
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JagV8 (09-02-2018)
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For what it's worth, the manual that came with my XFR (2009, so one of the early ones) states that the recommended oil for its 5.0 SC engine is Castrol 5w30, but the oil cap in the engine bay of my car has 5w20 written on it. I wonder if this was a relic from the previous generation engines - does the 4.2L in the STR take 5w30 oil?
Also, phoning my local jag service centre lead to a recommendation of using 0w20...
Also, phoning my local jag service centre lead to a recommendation of using 0w20...
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