LOOSE OIL CAP FOUND ON #1 ENG DURING PREFLT INSPECTION.

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ACCORDING TO LOG SHEET ACFT; DEC/XX/94; SNA. (CONTRACT MAINT IN SANTA ANA?) THE NIGHT BEFORE I SVCED THE ENGS ON THIS ACFT. APPARENTLY ACFT WAS FOUND WITH THE OIL FILLER CAP AJAR ON THE L ENG. I TRULY THOUGHT I HAD SECURED THE CAP ON BOTH ENGS SATISFACTORILY. HOWEVER; I AM ONLY HUMAN; AND MAY HAVE LEFT THE CAP ON THE L ENG AJAR. THERE WERE A LOT OF EXTENUATING CIRCUMSTANCES THE NIGHT OF THIS OCCURRENCE THAT I FEEL SHOULD BE BROUGHT TO LIGHT. THE ACFT HAD AN EXTENSIVE ENG PNEUMATIC TROUBLESHOOTING CHK; AND AN ENG MOUNT BOLT TORQUE INSPECTION. COMPLETED ON THE #1 ENG AFTER IT WAS OILED IN SLC. I WOULD LIKE TO THINK THAT DURING THE MAINT CHKS PERFORMED THAT NIGHT; SOMEONE MAY HAVE ACCIDENTALLY CAUGHT SOME HVY WINTER CLOTHING ON THE OIL FILLER CAP RELEASE LEVER. DUE TO HVY SNOW AND WIND IN SLC THAT NIGHT; THERE WAS PLENTY OF HVY CLOTHING AND AT LEAST 4 MECHS WORKING ON THE #1 ENG THE BETTER PART OF 6 HRS THAT NIGHT. AFTER MAINT WAS COMPLETED; WE RAN THE ENG FOR A LEAK CHK AND PNEUMATIC CHK AND NO OIL LEAKS WERE PRESENT BEFORE THE ACFT LEFT SLC. I ALSO HAVE SOME QUESTIONS ABOUT THE LOG SHEET FROM SANTA ANA CONTRACT MAINT; THINGS THAT JUST DON'T ADD UP. (SEE ATTACHED SHEET.) ON THE LOG SHEET THESE FACTS WERE NOTED: 1) L ENG WAS FOUND LEAKING. BUT THE POS NOTED ON THE LOG SHEET WAS THE #2 ENG? 2) NO OIL QUANTITIES WERE ENTERED IN THE LOG SHEET. EVEN AFTER THE LOG SHEET CA STATED THAT HE HAD SVCED THE ENG? 3) THE WRITE-UP WAS 'FLUID LEAKING OUT OF L ENG ON TAXI; IT APPEARS TO BE OIL.' THE MALFUNCTION CODE LISTED ON THE LOG SHEET WAS A 1TO. THIS DENOTES A PLT RPT. WHAT WAS THE PLT DOING ON THE GND WHEN THE AIRPLANE TAXIED TO THE GATE; INSTEAD OF IN THE COCKPIT? 4) DUE TO NO SKILL LISTING ON THE LOG SHEET. DOES THE CONTRACT MAINT INDIVIDUAL HAVE AN A&P LICENSE? WITH THESE QUESTIONS BROUGHT TO LIGHT; I RESPECTFULLY REQUEST THAT AN INCIDENT RPT BE FILED BY THE CONTRACT MAINT PERSON RESPONSIBLE FOR ALL THESE DISCREPANCIES. NEVERTHELESS; I WILL CONTINUE; AS ALWAYS TO MAKE EVERY EFFORT TO DOUBLE-CHK AND COMPLETE ALL MAINT IN A PROFESSIONAL MANNER.