Recent content by hawk02

In heavy rain, I’ll switch my Cadillac CT5-V Blackwing into Snow/Ice mode. It softens throttle tip-in and overall response, which makes it less likely to spin the tires or step the rear out. Even with the manual transmission, it helps take some of the edge off torque delivery—especially on...

I bought my 5BW used with 9,700 miles on it. Shortly after purchasing the car, I noticed on the freeway that the steering wheel wasn’t centered—the red stripe was slightly left of center while driving straight. I took it to the dealer for an alignment and was told Cadillac only covers...

Oracle used to make what they called a "Ghosted" LED side-markers for various models that matched the color of the car. I had a set of front and rear markers in mosaic black metallic on my ZL1. Not sure if they still make them.

My ’21 GMC Sierra with the base infotainment system honestly has the best midrange and low-end of any GM vehicle I’ve owned—better than the C8 Corvette, Camaro ZL1, Blazer, CT5-V Blackwing, and even the Bose system in my Porsche. To my ears, it’s only missing a bit of high-end clarity, but...

There’s never been a “Supercar” 15W-50—Supercar branding only applies to the 0W-40 and 5W-50 dexosR oils. That’s why the 15W-50 is only recommended by GM for track use.

Amazon still Lists Mobil 15W-50. A 5 quart jug is $28 bucks...

I wouldn’t call 15W-50 a slight increase over 0W-40 — it’s roughly 30–50% thicker at operating temp, which is exactly why GM specifies it for high lateral load conditions. The real difference between the oil weights is in the high temperature, high shear (HTHS) values. A 15W-50 has ~20–30%...

The 15W-50 recommendation on the ZL1 1LE isn’t just about the Goodyear 3R tires—it’s the entire system working together. The 1LE has significantly more aero (downforce) and the Multimatic DSSV dampers allow the car to sustain higher lateral loads more consistently than the standard ZL1. That...

The ZL1 1LE oil weight for track days is 15W 50. 0W 40 is the oil weight for street use. The 5W 50 is for the C8 Z06 & ZR1.

I understand the dealers are now using the Mobil 1 FS oil for changes in the 6.2L L87s because it’s less expensive than the Super Car oil. So yes, I think cost has a lot to do with the expanded list of Dexos R approved oil.

Savage Cadillac is where I got mine.

I’d be very cautious about changing pulleys without a tune. Increasing boost raises cylinder pressures, and the timing typically needs to be adjusted to keep the engine safe. With a 2.18 upper on 92 octane, the bigger concern isn’t hitting 700 hp — it’s whether the ECU will have to start...

I'm going to talk to Tapout Tuning about installing the reservoir when I get back to Ohio in May.

I’d skip tinting the side markers altogether. Instead, go with smoked LED replacements — either single- or double-row LEDs. They look absolutely killer when illuminated and give the car a much cleaner, more modern appearance than tinted factory lenses.