Are filters designed to flow at the recommended oil viscosity intended for a particular vehicle? If a manufacturer recommends 10W-30 be used for a particular vehicle, is the filter designed to flow best at that viscosity? What would happen to the filter if 10W-40 were used in a vehicle where the manufacturer recommended 10W-30?
Filters Designed for Recommended Viscosity?
- Thread starter Clyde65
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Probably nothing....filter flow is only relevant at very low temps and max oil pressure is determined by the bypass valve built into the engine.
For example, if you ran a 20w-50 instead of a 5w-30, the bypass valve would remain open longer on cold starts and oil flow to the engine could be adversely affected. At normal operating temp, the difference in relative viscosities isn't really all that significant.
TS
For example, if you ran a 20w-50 instead of a 5w-30, the bypass valve would remain open longer on cold starts and oil flow to the engine could be adversely affected. At normal operating temp, the difference in relative viscosities isn't really all that significant.
TS
the filter doesnt know how thick the oil is. a 5w20 is alot thinner upon cold start when its 80 degress outside compared to that same 5w20 when its 10 below and youre in a blizzard. in both instances, the filter bypasses IF and only If it needs to.
Filters are designed for a wide variety of oil weights, so I doubt they are that specific with their media.
Filter makers use the same media, in various sizes of course, for all the filters in a 'line', and that 'line' sees thin and thick oils depending on engine, age, outside temp.,and owners preferences, etc..
Filter makers use the same media, in various sizes of course, for all the filters in a 'line', and that 'line' sees thin and thick oils depending on engine, age, outside temp.,and owners preferences, etc..
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