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    Oil changes due on heavily modded DI LT4 and my old school GM 350. Opinions?

    Just as the title says. I made a post awhile back about oil weights/options for a modded LT4. Finally about to get around to a change this weekend. Been too busy with work, the car hasn’t been driven. It’s a heads/cam/Whipple LT4. Stock bottom end. Currently running the Mobil 1 0w40 ESP but...
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    Mobil 1 FS 0w40 vs 5w40 vs 5w50 vs 15w50 in a modified LT4 in warmer climate??

    Alright guys, I’m working nights tonight so I figured I’d make a new post to help narrow down the remainder of my options with some more input from you guys. My previous post was in regards to the Mobil 1 0w40 ESP/Supercar Dexos 2 requirement on the ZL1, Z06 and CTS-V for the LT4. From that...
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    Is GM’s Dexos 2 requirement for the LT4 on the C7 Z06 and CTS-V strictly emissions based?

    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...
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