Castrol 1597B1 EDGE Extended Performance 5W-30 Advanced Full Synthetic Motor Oil, 5 Quart

Very good oil for not just euro cars, but older Asian and American vehicles like my 2005 Infiniti G35 that can run API SL spec oil. I noticed a significant reduction in valvetrain noise compared to regular API/ISLAC GF oils I trialed with before. The engine also feels more responsive and smooth at higher RPMs.Not all 5w30 are the same, this API SL/ACEA a3/b4 spec oil has a higher kinematic viscosity of 12.1 and a higher HTHS of 3.5 compared to API SP/ILSAC GF 6 oils which are thinner and suited for newer GDI engines. You can look find spec sheets on any oil manufacturers website to compare.This oil is a very good value for $25, the only gripe I have is the pour point is not the best at -36 Celsius so it does flow during cold starts in the frigid Chicago winters up here. I would switch to Castrol 0w30 or another 5w30 with the same specs but with a much better pour point of -40C or below like Liqui Moly or Redline oil.

I changed my 2001 Sport Trac over to synthetic blend by mistake. The mechanic changing the oil pumped from the wrong barrel . OK no harm done and I only paid for regular oil. I did notice a step up in performance and slightly better mileage ,which is a big plus.Now as a confirmed believer 5000 mi later I stepped up to full synthetic and things got even better , seeing and hearing is believing , and it even works out cheaper.!! can't beat that . I only need an oil change once in 10,000 mi. not three times can't beat that either.

I buy this for all my DIY oil changes , the price is reasonable and the oil keeps my car running smooth during my long drives, the oil life doesn't drop as fast

It's Oil I recommend using a synthetic name brand of what the car calls for and change your oil early.. Don't go by the 10K on the bottle. If your car calls for an every 5K change do 4K.. If it's a 10K change seriously don't listen and do a 5/6 if you are planning on keeping the car.. There's no such thing as over Maintaining your cars Fluid's.. All cars want fresh n clean fluid's in them over old used and Burnt.. Especially new cars, The car company's lie and say for life with trans fluid's and it's not..

Good product for the price, durable

I mix this with the red grease to make my own gun lubricant. It works really well and saves money in the long run. I feel like most gun lubes are way overpriced and you end up using less than you should so you don't go through it too quick.Mixing your own let's you save money and not worry about how much you're using.

This is the the best oil if you don’t have a newer car , I have a 2009 Acura TL for 12 years and this is my go to oil keeps my engine running smooth. This is the best affordable quality oil you can get.

Castrol Edge 5W-20 is a premium full synthetic motor oil touted for its strength and performance. I'm a driver who values both, so I put it to the test in my daily driver. Here's the verdict:Pros:Smoother Operator: The first thing I noticed was a significant improvement in engine smoothness. Gone was the slight roughness at idle, replaced by a purring refinement that had me smiling behind the wheel.Power Unleashed: Acceleration felt sharper, with the engine responding more eagerly to throttle inputs. The claimed reduced friction seemed to translate into real-world driving.Thermal Titan: Even during hot days, the oil temperature remained remarkably stable. No worrying oil breakdown or engine overheating – just cool confidence behind the wheel.Extended Endurance: The promise of extended oil change intervals is tempting, but I'll stick to my manufacturer's recommendations for now. However, knowing the oil can handle longer intervals is reassuring for occasional road trips.Cons:Pricey Potion: Castrol Edge is definitely not the cheapest oil on the shelf. But for the performance and peace of mind it provides, the premium might be worth it for performance-driven drivers.Not for Old Timers: While great for modern engines, Castrol Edge might not be the best choice for older, high-mileage vehicles. Consult your owner's manual or a mechanic for specific recommendations.Overall:Castrol Edge 5W-20 is a clear winner for drivers who demand the best for their engines. It delivers noticeable improvements in smoothness, power, and thermal stability, making it a worthy investment for those who prioritize performance and protection. Just be prepared for the premium price tag.Happy driving!