2027 Corvette's 6.7-Liter V-8 Has Oil Leak IssueChevroletThe biggest news regarding the 2027 Chevrolet Corvette is what sits behind the driver. Chevrolet's new 6.7-liter LS6 V-8 powers the Stingray, Grand Sport, and Grand Sport X; it produces 535 horsepower and 520 pound-feet of torque, which makes it a healthy upgrade over the outgoing 6.2-liter LT2 and gives even the entry-level Corvette considerably more muscle. Unfortunately, the LS6 may also have picked up a less desirable trait: according to a recent GM service bulletin, some 2027 Corvettes equipped with the new engine may develop an oil leak.Last month, GM issued service bulletin PIP6132, which covers all 2027 Corvettes with the new LS6 engine. According to the bulletin, some owners or technicians may notice engine oil underneath the vehicle. Upon closer inspection, technicians may find a small leak coming from between the oil pan and oil cooler adapter. With the engine running, bubbling may also be visible around the front or rear mounting locations of the oil cooler adapter.GMThat is, obviously, less than ideal. (Nobody wants to see drops of oil underneath their brand-new $100,000 Corvette.) Thankfully, the fix sounds relatively straightforward: GM instructs technicians to replace two oil pan high-pressure port seals located between the oil pan and oil cooler adapter. However, the company stresses the importance of making sure the four oil cooler adapter bolts are tightened evenly and in the proper sequence, to prevent additional leaks.It's important to note that this is a service bulletin, and not a recall. The bulletin is intended to give technicians a clear repair procedure if they encounter the problem. Owners who discover an oil leak should therefore let their Chevrolet dealer handle the repair, rather than breaking out the tools themselves.There's a lot of excitement surrounding the LS6 and GM's other new V-8s, so any issue with the new engine is going to attract attention. Hopefully, once these troublesome seals are replaced, the latest Corvette small-block will provide owners with many trouble-free miles.If You Can Only Own One Car, Make It One of TheseThese Are the Most Popular Cars by State