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My dino stash finally ran out, and given the price of dinos vs syns these days it has now become less costly to run syn per mile if you run it longer which I plan to do. My 2004 Silverado 5.3 has had a steady diet of "old" Havoline (had 48qts I think at closeout) for years then went to Formula...

I just changed the oil/filter with dino for what I think is the last time in my 2004 chevy silverado 5.3L (uoa's posted here). 115000mi and going to 120000 with this change. I had a 48 qt stash of "old" havoline to go through then a stash of Formula Shell from the Walgreens sales - all stuff I...

Just had to replace the water pump on my 2004 5.3 silverado with dex cool. 113,500mi and going strong (I have uoa's posted too). I asked them how the coolant and cooling system looked. Looked great, no issues they said. This was the first major non maintenance item I have ever done to the truck.

My 2004 Chevy Silverado 5000mi (yes exactly) OCI with Formula Shell 5w30. AEM dryflow air filter, wix 51522 oil filter, no makeup oil, no additives. 105,065 mi at oil change. Blackstone labs. Sampled 11/21. Comments: It's been a while since we last saw this engine, but we're quite pleased to...

Mostly city driving, no makeup oil, wix 51522 filter, aem dryflow air filter, Formula Shell 10w30. This is my 2nd OCI with Shell after running "old" havoline for 8 or so OCI's in a row. This stuff seems even better. And I picked it up cheap! Still have a nice stash of this in the garage...

Here is my trusty Chevy truck. Oil filter is Wix 51522, air filter is AEM dryflow, 75092 miles total, no make up oil added. I am all out of old Havoline now (bought 48qts at closeout). Next change starts my Shell stash. Blackstone comments: "Lead continued to improve here and all wear is now...

3.3L V6. Changed air filter at this oil change. 63,386mi on van at this change. 0 make up oil. I use the local Havoline quick change place, so it is a Havoline oil filter (purolator from what I have read). I guess this is bulk oil so the makeup may be a little different than from a bottle. item...

Another year has gone by so time for an analysis. GM's owner site moved to yahoo so I can't get my vehicle record details - this could be 5 or 10w30, can't recall. Filter is wix 51522. It is "old havoline" which I stocked up on at low prices - I think I still have 18 qts left or 3 oil changes...

Here is my latest UOA. No make up oil and no additives. Analysis by Blackstone. Air filter is AEM Dryflow, oil filter is wix 51522. List below is this UOA/Univ Avg. 45,243 miles on truck at sample. TBN was fine for this oil previously at 6500 miles so no TBN this time. Comments: "Lead continued...

This is the old Havoline. I use the local Havoline oil change place for my wifes van, and I think they use the real stuff. According to them it has deposit shield in it now so in a year I will have reults on it. No makeup oil or other additives at all. Filter is a havoline (purolator I think)...

Here is my latest UOA. This oil was in service from about 3/18 to 8/30. Nothing added, not even make up oil. Keep in mind I had Mobil 7500 in it two OCI's ago. 33994 mi on truck, and I did not compression brake by down shifting this OCI like I did the previous ones. Air filter is original and...

I think this is the correct forum for this. I thought some of you might find it interesting my OLM just activated today (3/2) and I recently had a UOA done without changing the oil. See my post in UOA forum using Havoline. The duration and mileage is noted there so I won't repeat here.

This is what I call a "pure" run. Nothing added to oil during interval - not even make up oil. Nothing serviced on engine during the interval either. I am happy with the results. It looks like Havoline is the real deal. I don't know about a year and 12k miles like one guy did with this engine...

Partial history: 4208 mi Valvoline went in for 4265mi, UOA posted 8473 mi Motorcraft syn blend went in 13,988mi mobil 7500 went in for 6985mi, this UOA 16,196mi Chevron techron fuel syst clnr 16,503mi new flowmaster muffler 20,973mi Havoline went in Nothing added to oil, no makeup oil added. No...

I had the air filter changed this interval and treated with chevron techron fuel syst cleaner. No oil added. Blackstone did the analysis, 24,437mi on van, 3694mi OCI: vis 56.9, flash 375, fuel Comments paraphrased: Nice imp in wear/Si. If you did not change filter it was sealant washing out...

Here's my first UOA on this vehicle. I have now switched to Motorcraft 5w30 synthetic blend with ac/delco filter, which is what was on it w/ the Valvoline all climate. Comments are appreciated. Blackstone said more lead then they normally see due to break in, otherwise typical for oil run of 5K...

This is my first post ever. I have been reviewing this site for a few months. I had my wifes van oil tested - it was a 6 month interval. I think I need to change it sooner - TBN 0. What does everyone think? I use a shop to do her service. I do my own. 17,023 miles on van. May have forgot my...