Switching Brands

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Mar 17, 2022
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I have a 2024 Tahoe and a 2024 F150 both with 5 litre engines. Both of these have lifetime drivetrain warrenties so I really dont know why I'm so concerned about what the dealers have told me about oil changes.
Chevy dealer said its not good to switch brands of oil you should always use the same. I wouldnt think using any of your major brands at different times would hurt the engine as long as you do proper intervals?
Ford dealer said if I go to Motorcraft full synthetic that I could never go back to semi synthetic.
I really dont believe either one of these dealers but after having a 21 GMC 6.2 that burned a quart of oil every 2000 miles I dont want to cause any problems with my new vehicles.
Thanks
 
There’s nothing wrong with switching brands, it won’t hurt a thing. Since I got my Civic 4 years ago I have used Castrol Magnatec, Edge EP, Pennzoil Platinum, Mobil Super, Quaker State Ultimate Protection and Valvoline Restore and Protect. And I will be switching to ESP X2 later this year as well
 
It's ok to switch. You can go back to semi-synthetic from synthetic, but I don't know why anyone would. You should use "Synthetic" in today's times IMHO especially when you're trying to take care of your cars and prevent any problems.
 
I have a 2024 Tahoe and a 2024 F150 both with 5 litre engines. Both of these have lifetime drivetrain warrenties so I really dont know why I'm so concerned about what the dealers have told me about oil changes.
Chevy dealer said its not good to switch brands of oil you should always use the same. I wouldnt think using any of your major brands at different times would hurt the engine as long as you do proper intervals?
Ford dealer said if I go to Motorcraft full synthetic that I could never go back to semi synthetic.
I really dont believe either one of these dealers but after having a 21 GMC 6.2 that burned a quart of oil every 2000 miles I dont want to cause any problems with my new vehicles.
Thanks
You should ask this Chevy dealer what will happen if you change brands.

Also ask the Ford dealer what will happen if you switch back to semi synthetic.

Ask for technical details.
 
That is news to me. I've used a lot of different oils since I've been changing my own oil since the 1970s. I use what ever looks good good at the time I buy oil. Lack of maintenance is what kills engines. Sounds like a bunch of bull manure to me.
 
Dealerships need to get rid of service advisors. They do more harm than good. No one believes them anymore. I want to deal directly with the mechanic that works on my car.

I know, I know…
 
You should ask this Chevy dealer what will happen if you change brands.

Also ask the Ford dealer what will happen if you switch back to semi synthetic.

Ask for technical details.

I'll bet that if you had all your service done at either the Ford or Chevy dealer and they got a good price on their bulk oil from another blender, changing brands would be fine.
I'd also bet that if all the Ford dealer had hanging around handy was semi syn, that'd be fine as well.
What a pile of equine fecal matter.
 
I have a 2024 Tahoe and a 2024 F150 both with 5 litre engines. Both of these have lifetime drivetrain warrenties so I really dont know why I'm so concerned about what the dealers have told me about oil changes.
Chevy dealer said its not good to switch brands of oil you should always use the same. I wouldnt think using any of your major brands at different times would hurt the engine as long as you do proper intervals?
Ford dealer said if I go to Motorcraft full synthetic that I could never go back to semi synthetic.
I really dont believe either one of these dealers but after having a 21 GMC 6.2 that burned a quart of oil every 2000 miles I dont want to cause any problems with my new vehicles.
Thanks
I have a 2007 Focus with 233,000 miles. First 30,000, Motorcraft 5w20 blend. Probably the next 100,000, NAPA full syn. since then, SuperTech syn, Providence syn, Pennzoil Platinum (on annual rebate), Valvoline syn, NAPA syn. Price is now my primary reason. Car runs great and is always on full before each oil change.
 
for years I was brand loyal, and as I have gotten older (and wiser I think), I have become way less loyal to oil brand. I used to be a M1 fan religiously, and now it's Citgo, ST, Mystik. I try to pick what is cheapest and meets the spec.

Switching brands and from FS to semi-synthetic is an "old wives tale" and neither will hurt a thing.
 
Thanks for all your reply's they were what I believed but sometimes you feel more assured when others agree with you. I am going to start taking the Tahoe to a local independant shop and he stocks Mobil 1 and Kendall oils. The F150 will probably go to the dealer because I have points and get discounts on oil changes but their charge for full synthetic is ridiculous.
Thanks again
 
If you use an oil brand you have been loyal to for decades and new information comes out that it's just a low tier oil does that mean you should still use it?
Total nonsense.
I'm not sure I ever used the same oil back to back on any vehicle.
 
I think I remember years ago on BITOG there were a few discussions about how switching brands could be bad. The theory was Brand A had a certain additive package and Brand B had a completely different additive package. When switching there was a period of time with higher wear when the old ad pac was removed from the parts of the engine and the new ad pac was taking effect.

I don't think there was any proof but it was more of an exercise in theory. Does anyone remember this?
 
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