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  1. R

    Land Rover STJLR.03.5003 (Euro oil) vs. API SP (U.S.)?

    Yes, I agree with 5w30. I'm not going to drop to 0W-20 on my own, no.
  2. R

    Land Rover STJLR.03.5003 (Euro oil) vs. API SP (U.S.)?

    I just looked this up: LR themselves messed around with the specs. Just two years later with same Ingenium gasoline engine they changed the spec to STJLR.51.5122 which dropped the viscosity from 5W-30 to 0W-20. That new spec had the effect of lowering the ZDDP too. This tells me the motor can...
  3. R

    Land Rover STJLR.03.5003 (Euro oil) vs. API SP (U.S.)?

    Have a Range Rover (U.S.) with 2.0L turbo 4 cyl., 2016. The factory required oil from 7 years ago is Land Rover spec STJLR.03.5003. Rather than go to the hassle of ordering Euro oil here in the U.S., any reason I can't substitute a readily-available U.S. synthetic oil rated SP/ILSAC GF-6A/GM...
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