the corvette s new 6 7 liter ls6 v8 is already leaking oil, Image ChevroletImage: ChevroletThe Gen-6 small-block engine family is fundamentally integral to the health and wealth of General Motors. It's the beating heart and soul of the company, powering the automaker's most profitable products - trucks, SUVs, and obviously, the Corvette.Replacing the outgoing 6.2-liter LT2, GM's brand-new naturally aspirated 6.7-liter LS6 V8 powers the Stingray, Grand Sport, and Grand Sport X with 535 horsepower and 520 lb-ft of torque.Unfortunately, the upgraded small-block seems to have already sprung a leak. According to a recently issued General Motors service bulletin, some 2027 Corvettes are leaving oily drips on garage floors.Related Videothe corvette s new 6 7 liter ls6 v8 is already leaking oil, Image GM TSBImage: GM TSBGM has issued service bulletin PIP6132 for all 2027 Corvettes fitted with the new LS6 motor, addressing oil pooling underneath the car. The document points to a slow weep between the oil pan and the oil-cooler adapter. When the engine is idling, small air bubbles can even be seen around the adapter's mounting bolts.The remedy itself is relatively quick and simple.Chevy instructs certified technicians to swap out two high-pressure port seals sitting between the pan and the cooler adapter. The trickier part comes down to assembly discipline: technicians have to make sure the four cooler adapter bolts are torqued down evenly and in a precise sequence so the new seals don't pinch or weep down the line. It's unclear if this is a hint into what actually went wrong during assembly at the factory or if the seals themselves were defective.This is a technical service bulletin rather than a full-scale recall. Teething issues are almost a rite of passage when a manufacturer rolls out a new engine architecture, but with the scar tissue left over from the multiple issues GM battled during the Gen-5 small-block era, owners and shoppers are sure to be holding their breath.Become an AutoGuide insider. Get the latest from the automotive world first by subscribing to our newsletter.