No, Uni filters do not come pre-oiled. They are sold dry and require oiling before installation to function correctly.
Understanding Uni Air Filters
Uni air filters are known for their high-quality foam construction, designed to trap dirt and debris effectively to protect your engine. However, their ability to filter relies heavily on being properly oiled.
Unlike some paper or synthetic filters, foam filters like those made by Uni utilize a specialized filter oil. This oil creates a sticky surface on the foam pores, which captures fine particles that might otherwise pass through the foam material itself.
Why Oiling is Necessary
Running a Uni filter without oiling means compromising its filtration capability. The dry foam alone cannot adequately stop microscopic contaminants, which can lead to premature engine wear. Oiling ensures maximum efficiency and longevity for both the filter and your engine.
Oiling Your Uni Filter: What You Need to Know
Since Uni filters come dry, you will need to purchase filter oil separately. The reference provided highlights key details about this process:
- Requirement: UNI filters don't come pre-oiled. You must oil them yourself.
- Recommended Product: It's best practice to buy a can of filter oil when you purchase the filter. Uni offers their own specific filter oil designed for their products.
- Filter Oil Properties: The reference notes that UNI oil is extra thick and sticky, making it ideal for trapping dirt within the foam structure.
- Alternative (In a Pinch): While not ideal, regular engine oil would do if you are in a bind and cannot access proper filter oil. However, this is a temporary solution.
- Application Method: Be sure to thoroughly soak the filter in the filter oil and squeeze-out the excess. This ensures even saturation without leaving too much oil, which could restrict airflow.
Recommended Oiling Steps
- Clean the filter if it's not brand new (use a dedicated filter cleaner and let it dry completely).
- Apply filter oil liberally to the entire surface of the foam.
- Massage the oil into the foam to ensure even distribution throughout the material.
- Gently squeeze out the excess oil. Do not twist or wring the filter, as this can damage the foam or glue seams.
- Allow the filter to sit for a few minutes to allow the oil to wick evenly before installation.
Choosing Your Filter Oil
Based on the reference, here's a quick comparison:
| Feature | UNI Filter Oil | Regular Engine Oil |
|---|---|---|
| Filtration | Excellent (thick/sticky) | Adequate (in a pinch) |
| Consistency | Extra thick and sticky | Thinner |
| Recommended | Yes | Only as a temporary alternative |
| Availability | Specialty shops/online | Widely available |
In conclusion, always plan to oil your Uni filter before use. Using the recommended Uni filter oil will provide the best performance and protection for your engine.
