<?xml version="1.0" encoding="UTF-8"?>
<!--CIMG V1.1 (21-04-2026)-->
<xbrli:xbrl xmlns:in-capmkt="http://www.sebi.gov.in/xbrl/2025-11-30/in-capmkt" xmlns:in-capmkt-ent="http://www.sebi.gov.in/xbrl/Changes_In_Management/2025-11-30/in-capmkt/in-capmkt-ent" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" xmlns:nonnum="http://www.xbrl.org/dtr/type/non-numeric" xmlns:in-capmkt-types="http://www.sebi.gov.in/xbrl/2025-11-30/in-capmkt-types" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:net="http://www.xbrl.org/2009/role/net" xmlns:num="http://www.xbrl.org/dtr/type/numeric" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:iso4217="http://www.xbrl.org/2003/iso4217" xmlns:negated="http://www.xbrl.org/2009/role/negated" xmlns:xbrldi="http://xbrl.org/2006/xbrldi" xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:xl="http://www.w3.org/1999/xlink"><link:schemaRef xlink:type="simple" xlink:href="in-capmkt-ent-2025-11-30.xsd"/><xbrli:context id="MainD"><xbrli:entity><xbrli:identifier scheme="https://www.sebi.gov.in/in-capmkt/ScripCode">500110</xbrli:identifier></xbrli:entity><xbrli:period><xbrli:startDate>2026-10-23</xbrli:startDate><xbrli:endDate>2026-10-23</xbrli:endDate></xbrli:period></xbrli:context><xbrli:context id="MainI"><xbrli:entity><xbrli:identifier scheme="https://www.sebi.gov.in/in-capmkt/ScripCode">500110</xbrli:identifier></xbrli:entity><xbrli:period><xbrli:instant>2026-10-23</xbrli:instant></xbrli:period></xbrli:context><xbrli:context id="I_ChangeInManagement1"><xbrli:entity><xbrli:identifier scheme="https://www.sebi.gov.in/in-capmkt/ScripCode">500110 </xbrli:identifier></xbrli:entity><xbrli:period><xbrli:instant>2026-10-23</xbrli:instant></xbrli:period><xbrli:scenario><xbrldi:typedMember dimension="in-capmkt:ChangeInManagementAxis"><in-capmkt:ChangeInManagementDomain>ChangeInManagementDomain1</in-capmkt:ChangeInManagementDomain></xbrldi:typedMember></xbrli:scenario></xbrli:context><xbrli:context id="D_ChangeInManagement1"><xbrli:entity><xbrli:identifier scheme="https://www.sebi.gov.in/in-capmkt/ScripCode">500110 </xbrli:identifier></xbrli:entity><xbrli:period><xbrli:startDate>2026-10-23</xbrli:startDate><xbrli:endDate>2026-10-23</xbrli:endDate></xbrli:period><xbrli:scenario><xbrldi:typedMember dimension="in-capmkt:ChangeInManagementAxis"><in-capmkt:ChangeInManagementDomain>ChangeInManagementDomain1</in-capmkt:ChangeInManagementDomain></xbrldi:typedMember></xbrli:scenario></xbrli:context><xbrli:unit id="pure"><xbrli:measure>xbrli:pure</xbrli:measure></xbrli:unit><in-capmkt:NSESymbol contextRef="MainI">CHENNPETRO</in-capmkt:NSESymbol><in-capmkt:NameOfTheCompany contextRef="MainI">CHENNAI PETROLEUM CORPORATION LIMITED</in-capmkt:NameOfTheCompany><in-capmkt:ScripCode contextRef="MainI">500110</in-capmkt:ScripCode><in-capmkt:MSEISymbol contextRef="MainI">NOTLISTED</in-capmkt:MSEISymbol><in-capmkt:ISIN contextRef="MainI">INE178A01016</in-capmkt:ISIN><in-capmkt:WhetherDisclosureFiledForListedEntity contextRef="MainD">true</in-capmkt:WhetherDisclosureFiledForListedEntity><in-capmkt:RelationshipWithTheListedEntity contextRef="MainD">Listed Entity (self)</in-capmkt:RelationshipWithTheListedEntity><in-capmkt:WhetherEventOrInformationIsAnOutcomeOfBoardMeeting contextRef="MainD">true</in-capmkt:WhetherEventOrInformationIsAnOutcomeOfBoardMeeting><in-capmkt:DateOfBoardMeeting contextRef="MainD">2026-10-22</in-capmkt:DateOfBoardMeeting><in-capmkt:StartTimeOfBoardMeeting contextRef="MainD">12:00:00</in-capmkt:StartTimeOfBoardMeeting><in-capmkt:EndTimeOfBoardMeeting contextRef="MainD">13:35:00</in-capmkt:EndTimeOfBoardMeeting><in-capmkt:NumberOfPersonsOrEntitiesForWhomChangeIsBeingReported contextRef="MainI" unitRef="pure" decimals="0">1</in-capmkt:NumberOfPersonsOrEntitiesForWhomChangeIsBeingReported><in-capmkt:DateOfReport contextRef="MainI">2026-10-23</in-capmkt:DateOfReport><in-capmkt:TypeOfChange contextRef="D_ChangeInManagement1">Appointment</in-capmkt:TypeOfChange><in-capmkt:CategoryForChange contextRef="D_ChangeInManagement1">Auditors</in-capmkt:CategoryForChange><in-capmkt:DesignationOfDesignatedPerson contextRef="D_ChangeInManagement1">Statutory Auditor</in-capmkt:DesignationOfDesignatedPerson><in-capmkt:SalutationOfDesignatedPerson contextRef="D_ChangeInManagement1">M/s.</in-capmkt:SalutationOfDesignatedPerson><in-capmkt:NameOfDesignatedPerson contextRef="I_ChangeInManagement1">R G N PRICE &amp; CO</in-capmkt:NameOfDesignatedPerson><in-capmkt:EffectiveDateOfReasonOfChange contextRef="I_ChangeInManagement1">2026-10-22</in-capmkt:EffectiveDateOfReasonOfChange><in-capmkt:TermOfAppointmentInMonths contextRef="D_ChangeInManagement1" unitRef="pure" decimals="INF">12</in-capmkt:TermOfAppointmentInMonths><in-capmkt:BriefProfile contextRef="D_ChangeInManagement1">R.G.N. Price &amp; Co., a firm of chartered
accountants, established in the year 1945 in
India has been carrying on the profession of
Audit, Assurance, Management Consultancy
and related services for more than 80 years.
The firm has, over the years, developed
expertise in various areas like Due Diligence
Reviews, Sarbanes Oxley Advisory, Forensic
Services, IT Audits, Business Valuations,
Arbitration support, ESG Compliance,
Taxation and Financial Compliance matters
apart from specialized services in relation to
Ind AS Transition, setting up Internal Control
Framework, Cost reduction strategies, Mergers
and Acquisition assistance, Financial
performance health check. The firm has its Head Office at Chennai and
branches at Mumbai, Bengaluru, Kochi,
Kollam and Kozhikode. The firm has
seventeen partners of whom, two have been
associated with the Firm for over 30 years,
three other Partners have around 25 years of
experience and the firm has an overall staff
strength of more than 50 Chartered
Accountants and over 300 staff members.</in-capmkt:BriefProfile><in-capmkt:WhetherTheStatutoryAuditorOrSecretarialAuditorHoldsAValidCertificateIssuedByThePeerReviewBoardOfInstituteOfCharteredAccountantsOfIndiaOrInstituteOfCompanySecretariesOfIndia contextRef="D_ChangeInManagement1">true</in-capmkt:WhetherTheStatutoryAuditorOrSecretarialAuditorHoldsAValidCertificateIssuedByThePeerReviewBoardOfInstituteOfCharteredAccountantsOfIndiaOrInstituteOfCompanySecretariesOfIndia></xbrli:xbrl>
