Premium Hydro Oil 1qt 15W50 36490013
Wright 36490013 Premium Hydrostatic Oil 1qt 15W50
This 15W-50 premium hydrostatic oil is engineered with a high zinc, synthetic base, ensuring exceptional stability and performance. It maintains superior viscosity even at high temperatures, thanks to its high levels of zinc phosphorus and minimal viscosity modifiers.
Key Benefits & Usage:
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Long-Lasting Performance: Designed to maximize oil change intervals and extend the life of drive systems in nearly all lawn mower hydrostatic applications. While 500-hour changes are recommended, testing shows it retains essential properties beyond 2000 hours.
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Initial Fill Recommendation: For new machines, this oil should remain in the system for the first full interval after break-in.
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Compatibility: Compatible and mixable with Mobil 1 15W-50.
Important Oil Guidelines (DOs and DON'Ts):
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DO NOT Use:
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Tractor hydrostatic or transmission oils, as they often contain friction modifiers unsuitable for wet clutches.
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Non-synthetic or synthetic blend oils, as they cannot provide the necessary shear resistance.
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20W-50 oils, as this often indicates they are not 100% synthetic.
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Recommended Alternatives (must meet critical viscosity criteria):
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Mobil 1 15W-50
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Aero Shell 15W-50 (noted for high viscosity index, ashless additives, absence of diesel engine additives, and global availability).
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Critical Viscosity Criteria: Ideal operating viscosity of 13cSt, and a minimum of 9cSt at max intermittent operating temperatures (~230°F).
Note on Hydro-Gear Products:
Hydro-Gear branded oil and service kits are NOT recommended for Wright pump and motor systems. While suitable for standardized transmission-based systems, they do not meet the synthetic oil standards required by Wright's pump and motor systems.
Shipping Information
We are a dealer, Interstate Supplies & Services, located in Stallings NC. In-stock items ordered before 1:00 PM EST (Monday–Friday) ship the same day. Weekend orders are processed and shipped on Monday. While most parts ship directly from our local store, if an item requires sourcing from our warehouse, we will ship it out as soon as it arrives.
Pickup Information
Local Pick-Up: Please wait for an email, text, or phone call when ready for pick-up. Usually ready in 2 hours during normal business hours, Monday to Friday. We are dealer Interstate Supplies & Services located in Stallings, NC.
Model Fitment
Please ensure this part fits your model before purchasing. We do not pay return shipping on incorrect orders, and a restocking fee will apply to all returned items (including unopened and unused parts). We absolutely cannot accept returns or issue refunds for used parts. Not sure if it fits? Reach out by phone, text, or email, or check our Interactive Parts Lookup first.
Please call or text 704-893-2878 if you want to confirm anything with us before purchasing!
1. Prices are subject to change without notice.
2. Product images are for illustration purposes only, real product may vary.
3. Real-time availability of this listing may not be guaranteed.
4. Price on shipping is subject to change.
5. All shipping delivery estimates do not include order processing time.
6. Orders placed before 1pm will ship the same day if in stock at our local store, Monday through Friday. All orders placed on Saturday & Sunday will be shipped on Monday.
7. By placing a pre-order you agree to wait estimated timeframe. If a product is in backorder the customer will be able to cancel.
8. Products on website may not reflect products available in our local store.