11/26/2025
Regarding engine oils. Here are the long term affects of 0W20. These are 1.5 litre GDI(direct fuel injection) turbocharged Honda/Acura engines. We are seeing these common issues that all appear to be related to lubrication related wear. 0W20 easily blends with gasoline, essentially reducing it to more of a solvent. The direct injection fuel systems produce 500-4000 PSI fuel pressure. It seems that the high fuel pressure washes down into the oil, further reducing viscosity. A word regarding “synthetic” oil. We know 0W20 is touted as “synthetic” as it has additives and such. But thin, watery oil is just that and at a higher cost. These thin oils were decided upon after pressure was constantly placed on auto manufacturers to achieve better fuel economy with reduced cold start emissions(first one minute the engine runs). Once auto manufacturers could no longer make internal engine components smaller, thinner, lighter, along with the increased efficiency of variable camshaft timing(also operates on hydraulic engine oil pressure), and direct injection fuel systems, they were forced to turn to removing other forms of parasitic losses or drag. Enter ultra thin engine oils. The consensus seems to be they decided to go with “what can we get away with” positioning on engine oils. What we are seeing is internal engine wear, timing chain issues, camshaft actuator(variable timing pulley), and turbo charger failures and/or total engine failure. Turbo chargers are forced to turn by exhaust gas escaping the engine which are 1500+ degrees. Consider turbo chargers spin 150,000+ rpm. Add the exhaust heat, high rpm, and an ultra thin oil and longevity is compromised, resulting in costly repairs. I personally use 10W30 full synthetic oil in my own vehicles and recommend it to folks seeking longevity from their engines. For those wanting to test their engine oil for raw fuel content, metal particles, contamination, etc., contact Blackstone Laboratories for testing. In the photos, note the camshaft lobe wear. One of these vehicle also had a failed turbocharger at 75K miles, along with timing chain stretch/rattle, and failed camshaft actuators(pulleys). The turbo charger failed so badly, engine oil was pouring out of it, the turbine and compressor wheels are worn down from contacting the housings, and the center shaft broke. The average cost of replacing the 1.5 litre turbocharger is $2600.00 for a new Rotomaster turbo(OEM manufacturer). Average cost of camshaft, actuators, timing chain/guides/tensioner repairs are around $4000.00 depending on model pricing will vary slightly. Please do your own research regarding these issues. We hope this saves folks time and mone