patateB-5
Member
Would Rotella T4 or T6 work okay on my 2006 Yukon XL Denali? I've used them on all my 5.7L Suburbans. 1998, 1999, another 1999, 1996. Any help appreciated. 
Thanks Philippe
Thanks Philippe
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I use Mobil 1 and see Amsoil recommended all the time.
RaiderRodney
Full Access Member
I love Amsoil but the Rotella oils are good quality oil too and for the price they're great imho.
blueinkd
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Run the best oil you want to spend money on in 5w30. Mobil1, Castrol, pezoil, royal purple, etc. I run Mobil, Castrol or penzoil full syn 5w30 and change it every 7500 miles. If you run conventional then to the 3k change intervals.
SnowDrifter
Full Access Member
I run some euro spec castrol 0w40 in all weather. From negatives, to 100's. Engine seems to like it.
Going to be getting an analysis done in the coming weeks so I can quantify it
Going to be getting an analysis done in the coming weeks so I can quantify it
Find a reasonably priced 5w-30 Dexos oil. If the label has Dexos on it, then it meets the OEM requirements. It's kind of a scam from what I've learned about oil ratings, but it DOES mean that it has met certain criteria for that motor.
Or, like stated above, go with a known premium oil and stick with that. A lot of premium oils that don't say DEXOS APPROVED, meet the criteria or exceed the criteria for a 5w-30 synthetic.
I've personally used a good off brand made for fleet use by RELADYNE and it has been stellar for MANY oil changes. Plus it's reasonably priced because the sticker doesn't have any big name on it.
Or, like stated above, go with a known premium oil and stick with that. A lot of premium oils that don't say DEXOS APPROVED, meet the criteria or exceed the criteria for a 5w-30 synthetic.
I've personally used a good off brand made for fleet use by RELADYNE and it has been stellar for MANY oil changes. Plus it's reasonably priced because the sticker doesn't have any big name on it.
Mudsport96
Full Access Member
Run a quality filter and whatever cheap oil is API certified in 5w30 and you will be fine.
Note that Blackstone Laboratories changed the oil analysis cost from $30 to $35 as of Nov. 1st.
Pay | Blackstone Laboratories
Pay for your oil samples here. No account needed! If you have an account, we will find it. And if you don't have one, we'll create one for you.
www.blackstone-labs.com
I too use Mobil 1. I’ve also used both Pennzoil and Valvoline.
BatsTDK
Full Access Member
How do you guys feel about changing oil, but not the filter? I currently have a Fram Ultra Synthetic oil filter which I’ve read is one of the best you can buy and is designed to run up to 20k before changing (not that I’d ever run it that long).
OP
OP
patateB-5
Member
At one time (Being my favorite), I thought Fram was one of the best out there. Then I read somewhere that it was one of the worst out there. Might be coming from the same people saying 'Coffee is good for you' one year and the next it's not good for you......
Now I just use Wix. Used them on both my challengers and all my suv's.
BatsTDK
Full Access Member
At one time (Being my favorite), I thought Fram was one of the best out there. Then I read somewhere that it was one of the worst out there. Might be coming from the same people saying 'Coffee is good for you' one year and the next it's not good for you......
I read the same, but apparently the Ultra Synthetic line they make is the exception. Well made and tested to perform exceptionally well.
OP
OP
patateB-5
Member
I'll keep that in mind. I've always like the look. Especially the black ones with the textured end for grabbing a hold of.
May be the next best thing since sliced bread but will not run any filter longer than10k tops and all my WIX Extreme Performance filters only go to 7500 tops but my M.O. is to change oil at 5k intervals. easy for me to remember to do at that mileage. Your rig, your call. Kind of like maintenance schedules on your rig. There is normal and extreme maintenance and smart people follow the extreme schedule. If your M.O. is to trade off rigs every few years, then the normal schedule and the 20k on the filter, will be ok.
SnowDrifter
Full Access Member
Not without knowing how loaded the filter is
If I'm that strapped for cash, tbh, I'd rather put cheap oil in and change the filter anyway. Even the best lubricants will do no good if there's particulates floating around. I'll 'shop down' on the oil before I do the filter, to meet a budget.
IF you were short tripping or something and changing oil early, AND used the longer filter (XG 3675), AND the engine was other wise in good condition - no vacuum leaks, good air filter, THEN I probably wouldn't think much about it.
SnowDrifter
Full Access Member
Fram has a wild product line.At one time (Being my favorite), I thought Fram was one of the best out there. Then I read somewhere that it was one of the worst out there. Might be coming from the same people saying 'Coffee is good for you' one year and the next it's not good for you......
I wouldn't touch their low end glued paper filters (regardless of how many people on BITOG preach them) with a 10ft pole. But their ultra synthetics? I'd put them on the same pedestal as Amsoil. Honestly, even above. Has larger flow holes than the amsosil units.
They used to be mesh backed, but the newer ones have changed to a different filter media with no mesh backing. It seems to filter better, but it substitutes the mesh backing for paper backing. I was eeeeee about it, but I've not seen any issues with it to complain about.
Ultra:
Amsoil:
Fram's low end...... Aka the orange can of death
Z15
Full Access Member
In reference to Rotella, a friend got this info.
BatsTDK
Full Access Member
SnowDrifter
Full Access Member
The prevailing wisdom used to be that higher ZDDP levels, a zinc + phosphorous based high pressure anti wear additive, found in diesel oil, would poison the catalytic converter in gasoline engines.
Given that pretty much all modern diesels have cats though... I'm not sure how accurate that is, or ever was....
OP
OP
patateB-5
Member
Okay guys got another question for you. Today I had new OEM Shocks replace all around. Too nice of a ride for me to lift the truck. Anyway I had the oil changed while it was in the shop. I decided to get Mobil 1 5W30. My oil pressure dropped almost 5psi. About 44psi hi and idling 35psi. Any advise. Could the sending unit be malfunctioning...? Open for suggestions.
