Sep 12 2022, 03:38 PM
QUOTE(empire @ May 25 2022, 10:23 AM)
My spare Car is also Iswara. Yes, old engines need thicker engine oil to protect its internals. Ideally 20w/40 la...thicker so it lubricates and sticks onto each internal part nicely to protect it from wear and tear.
You can get away using the thinner 15w/40 if your engine has been well maintained.
20w40 and 15w40 are actually the same viscosity during normal temperature. Both 40.You can get away using the thinner 15w/40 if your engine has been well maintained.
I believe your first one might be 20w50 which usually makes the car really sluggish and slow.
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