To verify that the normal temperature. Notice is difficult. If kept in the fridge until the oil is so marrow will be detected by the filter Supplier has changed in size, have more resolution at trapping dust debris.
To check the temperature Observe rare If stored in a cool place until the oil is changed. It is detectable The Supplier can change the filter to a more specific provision to trap debris.
Inspection at normal temperature. Observe rare if stored in a cool and oil wax is detected, the Supplier change size filter to have greater resolution and to trap debris, dust.