10W30 vs. 10W40 Unlocking the Power for Optimal Engine Efficiency

Hello. I have a mildly built 350 in a 76 Monte Carlo. I put 10w30 in instead of 10w40. Will this hurt my engine? The newer 10w40 is better for valve train noise. Is this true? I have typical "loud" valve chatter/ injector "tapping" noise on my gen 2rt10. https://amzn.to/43N4WNr - All-in-One OBDII Scanner The main distinctions between 10W-30 and 10W-40 motor oil will be elucidated in this ... The difference between 10w30 and 10w40 is the thickness of the oil at operating/high temperatures, at which 10w40 is thicker than 10w30. 10W-40 has a higher elastomeric content than, say, 10W-30 oil. That means more viscosity index improver content in a quart (or, by extension less actual oil). First off lets look at what 10W30 & 10W40 means. The first number, they are both 10 weight oils, no difference when cold. The second number, 30 ... 10w40 is what Honda recommends for the most part though 10w30 is used in cooler climates as per Honda recommendation. 20w50 can be used while ... In general a small increase in viscosity (from 10w30 to 10w40) on a high mileage engine is a good idea. It will boost oil pressure so more oil ... A 10W-40 oil is thicker than a 10W-30 oil. Thick oil is suitable for older machines and will limit the risk of leaks. Dive into the world of engine oils with our informative guide on the key differences between 10W30 and 10W40. In this video, we unravel the ...