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Home / Engine Parts / Oil / Phillips 66 /Phillips 66 X/C Aviation Oil 20W50 Quart
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Phillips 66 X/C Aviation Oil 20W50 Quart

337 Reviews 12 Answered Questions
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Overview

Phillips 66 X/C Aviation Oil is an ashless dispersant, multigrade engine oil specially formulated for year-round use in aircraft piston engines. It provides distinct performance benefits compared with single-grade engine oils, including easier starting and faster oil circulation at low temperatures, reduced warm-up time, and reduced oil consumption in most engines. It maintains its film strength under high loads and at high temperatures to protect against wear and piston scuffing. The ashless dispersant formulation helps minimize the formation of engine sludge, varnish, piston deposits and combustion chamber deposits, resulting in a much cleaner engine compared with the use of straight (nondispersant) mineral oils.

X/C Aviation Oil was the first FAA-approved mineral oil-based, ashless dispersant, multiviscosity aviation engine oil. It has more than 30 years of outstanding, proven performance in a wide variety of aviation uses, including flight schools, charter and cargo airlines, acrobatic aircraft, spray planes, race planes and virtually any other general aviation application. It is available throughout the United States and is exported to other countries around the world.

Features

  • Ashless dispersant helps minimize engine sludge and varnish deposits for a cleaner engine
  • Easier starting and faster oil circulation at low temperatures compared with single-grade oils
  • Reduced warm-up time and cooler operating temperatures compared with single-grade oils
  • High film strength for protection against wear and piston scuffing, even under high-load conditions, such as takeoff, and at elevated operating temperatures
  • Provides cleaner and quicker break-in than traditional all-mineral, non-additized, single-grade oils
  • Protects against rust and corrosion
  • Reduces oil consumption in most engines
  • Suitable for year-round use

Specifications

  • Avco Lycoming Material Specification No. 301G
  • Pratt & Whitney Bulletin No. 1183 Rev. U
  • SAE Standard J1899
  • Teledyne Continental Material Specification MHS-24B
  • U.S. Military Specification MIL-L-22851D (obsolete) for additive treatment
  • QPL Approval Numbers: D07L1-20W-50 (X/C 20W-50), D07L1-25W-60 (X/C 25W-60)

Applications

  • X/C 20W-50 Aviation Oil is recommended for use in opposed piston engines. It can replace Commercial Grade 65, 80 or 100 single-grade engine oils with no sacrifice in performance.
  • Recommended for use during break-in and then as the operational oil until TBO. X/C

Documents

Reviews

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Quality oil. We use it in most of our engine break-ins and our high time engines.

William J Verified Purchase

Phillips 66 X/C Aviation Oil 20W50 12Quart Case
November 4, 2024

best price out there

Central A Verified Purchase

Phillips 66 X/C Aviation Oil 20W50 12Quart Case
October 31, 2024

the best oil for breaking in my new 300 hp 550 engine

Jorge A Verified Purchase

Phillips 66 X/C Aviation Oil 20W50 12Quart Case
October 28, 2024

Cowell A Verified Purchase

Phillips 66 X/C Aviation Oil 20W50 12Quart Case
October 20, 2024

Received in good condition

Vince F Verified Purchase

Phillips 66 X/C Aviation Oil 20W50 12Quart Case
October 19, 2024

Really like this oil.

James D Verified Purchase

Phillips 66 X/C Aviation Oil 20W50 12Quart Case
October 18, 2024

my Lycoming 180 hp runs smoothly with this multi weight oil

Ed S Verified Purchase

Phillips 66 X/C Aviation Oil 20W50 12Quart Case
October 18, 2024

As expected.

Tom E Verified Purchase

Phillips 66 X/C Aviation Oil 20W50 12Quart Case
October 15, 2024

Richard D Verified Purchase

Phillips 66 X/C Aviation Oil 20W50 12Quart Case
October 12, 2024

Daniel R Verified Purchase

Phillips 66 X/C Aviation Oil 20W50 12Quart Case
October 11, 2024

Q&A

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Please note, Aircraft Spruce Australia's personnel are not certified aircraft mechanics and can only provide general support and ideas, which should not be relied upon or implemented in lieu of consulting an A&P or other qualified technician. Aircraft Spruce Australia assumes no responsibility or liability for any issue or problem which may arise from any repair, modification or other work done from this knowledge base. Any product eligibility information provided here is based on general application guides and we recommend always referring to your specific aircraft parts manual, the parts manufacturer or consulting with a qualified mechanic.

Q: What is the difference between the XC and XTC?

Per the supplier: We have not heard of XTC. Phillips oil does not have an XTC version, only X/C.

Q: Can I get the case price for the Phillips 66 X/C aviation oil 20W50?

You can select a case in the ordering drop down on this page. Once you make the selection, the part # and price for a case of 12 quarts will be displayed. It is also available in single quarts, a 55 gallon drum, or a case of 4 gallons.

Q: How can one read the date of manufacture from the bottle of Phillips 66 XC oil 20W50? And what is the shelf life?

For example, the code on the bottle will be formatted like this LL41A24017. To read the manufacture date, the first 5 characters are irrelevant. So, in this case, the date comes from 24017. To read it, it is the 240th day of the year 2017. If the code was LL41A00118, that would be manufactured January 1st, 2018. According to Phillips tech support, there is no set shelf life for this oil as long as it is stored properly. After 5 years, they recommend the oil be retested prior to use.

Q: Does Philips 66 cross country X/C 20/50 contain cam guard?

It does not but it can be added to it.

Q: Does the Phillips 66 20w50 12-case come with that handy blue oil spout?

Yes, each 12 quart case comes with a free pour spout.

Q: Is type m 20w50 compatabile with xc 20w50?

Type m is mineral oil for engine break in. You would not want to use it on an engine that is already broken in.

Q: What is the weight per case of the 12 x 1 liter of the Phillips 66XC oil?

1 case of 12 quarts weighs approximately 26 lbs.

Q: What is the difference between the XC and victory oil?

The Victory oils have the LW-16702 additive blended in.

Q: What is the difference between the XC 20w50 and the Victory 20w50? besides price?

The Victory oils have the LW-16702 additive in them. XC does not.

Q: Why does it say this is recommended for break in? is it a mineral oil? unsafe to use on already broken in engines?

Mineral oil is recommended for breaking in a new or overhauled engine. Phillips Type M straight oil contains high viscosity index based oils without detergents. Its safe to use but Phillips recommends a different oil after the engine is broken in. We always recommend consulting with your A&P/engine manufacturer for a recommendation on brand and type.

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