Hi Guys - My 2009 Tahoe with the 5.3 and cylinder deactivation has recently started to burn about a quart every 1500 miles. The last OC was 2 quarts 5w30 Maxlife High Mileage and 4 quarts 5w40 M1 because I thought I had more Maxlife laying around and it was all I had. Filter is a Fram TG. I'm at 7k on the OCI right now and just put in my second quart of Maxlife makeup.
I normally would not have used more than a quart makeup at this point. It is perfectly dry underneath and on the garage floor. No smoke seen or smelt. Do you think the 5/40 had something to do with it? I usually would run it to 8-10k so will be doing a change soon. Should I try another oil? Go with an HDEO? It does get into the single digests in the mountains here in Northeast PA pretty often this time of year. I do drive about 30k a year so can change oil often. The truck has had a steady diet of Maxlife for the past 100k.
There is 211k on it now and it runs smoother than ever and I want it to get too 300k. Thoughts are appreciated. Cost of oil is not too important to me as it is pennies compared to the overall cost of the car.
I normally would not have used more than a quart makeup at this point. It is perfectly dry underneath and on the garage floor. No smoke seen or smelt. Do you think the 5/40 had something to do with it? I usually would run it to 8-10k so will be doing a change soon. Should I try another oil? Go with an HDEO? It does get into the single digests in the mountains here in Northeast PA pretty often this time of year. I do drive about 30k a year so can change oil often. The truck has had a steady diet of Maxlife for the past 100k.
There is 211k on it now and it runs smoother than ever and I want it to get too 300k. Thoughts are appreciated. Cost of oil is not too important to me as it is pennies compared to the overall cost of the car.