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GMC Forum: Best motor oil for 2001 Denali Yukon
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Old 11-11-2017, 08:22 PM
Denali24! Denali24! is offline
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Smile Best motor oil for 2001 Denali Yukon

Hello Yukon Lovers! I need your expertise. What is the best motor oil besides Mobil 1 Full Synthetic for a 2001 Denali Yukon with high mileage?
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Old 11-16-2017, 08:37 AM
Daddio Daddio is offline
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Drives a 2014 GMC Yukon, 2005 Lincoln LS, Massey Ferguson 165, 1956 Thunderbird, 1959 Cadillac Biarritz
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Location: Prince Edward County, So Ont
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OK so I'll weigh in. I found motor oil is like underwear, everyone has a personal preference for personal reasons ... tighty whitey, boxer, long john, thong (??!!), commando ... all work fine for them.
I have just about converted my entire 'fleet' to Castrol synthetic. Lawn tractor, roto tiller, mower, snow thrower, Yukon, Lincoln, 2 classics, even the air compressor. All that's left is the Massey and it's scheduled next oil change, though it will be Rotella synthetic diesel oil.
I chose Castrol because I used their conventional GTX oil for years without any problems. But based on friends preferences, all brands seem to work fine and Mobil 1 certainly would as well.
The difference here is you have a high mileage engine and none of mine are. But I would think that as long as it isn't burning much oil, stick with Mobil 1.
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Old 11-16-2017, 11:27 AM
kfenske kfenske is offline
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Valvoline 5W30 High Mileage Semi-synthetic for years and far so good!
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Old 01-23-2018, 11:34 PM
Beachbourbon Beachbourbon is offline
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I stick with the owners manual recommendations. However, I would have no issue switching to full synthetic
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