Mary Meixelsperger
Analyst · Olivia Tong from Bank of America Merrill Lynch
Thanks, Sam. As Sam described, EBITDA from the operating segments was up 8% year-over-year to $109 million. The main items affecting the year-over-year change can be seen on the bridge on Slide 7.
Volume/mix was the largest driver, adding $10 million to EBITDA. Acquisitions, along with equity and other income, were also favorable, contributing $7 million. These were partially offset by margin and SG&A. As Sam mentioned a moment ago, the prior year benefited from favorable price-cost lag, which is captured in the $3 million decline in margin. SG&A is up, primarily due to public company costs and is in line with our expectations.
The net of all of these factors led to an $8 million increase in EBITDA from operating segments. Valvoline's overall adjusted EBITDA was $127 million and includes the impact of non-service pension and OPEB income, which was about $18 million in the quarter.
Slide 8 shows the adjusted EPS increase by $0.03 or 9%. $0.02 of the increase came from operating segment results and $0.01 came from the net of pension and OPEB income and interest expense.
Turning to other corporate items on Slide 9. Our effective tax rate in the quarter was 34.5%, in line with our full year guidance. CapEx totaled $9 million. Free cash flow was $79 million for the quarter, an increase of $44 million from prior year. The increase was primarily driven by the timing of cash settlements of separation-related working capital accounts.
We ended the quarter with total debt of $740 million, which included $75 million of short-term debt as part of our new accounts receivable securitization facility, which is used to repay our term loan by an equivalent amount. Key items include: remeasurement of certain of the OPEB plans, resulted in a gain of $8 million; and separation costs totaling $6 million.
Now let's turn to Slide 10, where I'll give you an update on our full year outlook. Our performance in Q1 gives us confidence to raise our full year guidance. We are raising our adjusted EPS forecast and narrowing the range to $1.36 to $1.43 per share. Our outlook for total volume growth is now at 3% to 5%, and our revenue growth is at 4% to 7%.
As we mentioned, VIOC had another great quarter, and combined with that, we have increased full year same-store sales guidance to 5% to 7%, and we are adding the 28 Time-It Lube stores to our company-owned VIOC counts. EBITDA from operating segments is now forecast at $440 million to $455 million. As a comparison, our previous outlook, adjusted for pension income, was approximately $435 million at the midpoint of our guidance.
We are also raising full year free cash flow guidance to $130 million to $150 million, reflecting approximately $25 million in lower estimated cash taxes and $25 million in cash settlements related to the separation.
Now let me turn things back over to Sam to wrap up. Sam?