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I knew about the Mobil 1 15w50 but didn’t know they had a 5w50. Learn something every day. Which 0w40 has the 4.1 HTHS? The 0w40 ESP/Supercar shows 3.5. No. The car is heavily modified at this point. Emissions have been removed and car has been tuned with the rear o2’s being deactivated.

Some solid options! Didn’t even realize they had a 5w50 supercar as an option. I’ll have to look into that. Might not be a bad move.

Does anyone here with an LT4 car use the red cap 15w50 Mobil 1 synthetic they recommend for track only as a year round fill? I just figure if the car is a weekend toy with mods and it sees some abuse, that might be a solid option… especially here in Houston, TX. I’ll have to go see what the...

I appreciate the responses guys! I’m sure the ESP is a quality oil. I don’t doubt that one bit. I just typically like to run a readily available oil I can grab local if I’m in a bind. I’m coming up on oil change time again and after doing some digging, started thinking if the Dexos 2 is...

Hello everyone! Long time lurker here but I finally made an account to ask my own question. I have a 2016 Cadillac CTS-V with the LT4. GM spec calls for a Dexos 2 approved oil and recommends the Mobil 1 synthetic 0w40 ESP which has recently been relabeled “supercar”. I’ve been running this oil...