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    Valvoline 75W90 causing vibration in rear diff

    I got on the Valvoline squeeze bottle train and got some vibrations. I went down to Walmart and bought what I used in the past which was SuperTech 75W90. It worked perfectly...no vibration.
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    Walmart In-Store deals! $32 for 12 quarts of SuperTech Full Synthetic! $39 for 12 quarts Valvoline Advanced!

    You have to go into the Walmart store and use the price scanning phone app to verify. This is not advertised. Bought it! Snagged!
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    Valvoline Global Store 25% Off and Walmart In-Store deals!

    Once again the Valvoline Global Store is having a 25% off bulk sale. The best deal is these 12 quart garage boxes which are sold at Walmart for $59. Free shipping. The 12 quart boxes are very durable...basically a cardboard box and a bag of oil inside. It ships remarkably well...
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    30% off Valvoline Advanced/High Mileage 12 quart box 5W30/0W20 $17.70 for 5 quarts

    Valvoline Website https://shop.valvolineglobal.com/ - This is coming directly from Valvolines online company store. - You must buy 4 12 quart boxes of either Valvoline Advanced or Valvoline High Mileage Full Synthetic. 12 quart box only available in 0W20 and 5W30 viscosity. Buying 4 boxes...
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    ACDelco Standard duty vs Heavy Duty Air Filters

    This thread is mainly about air filters found on the Chevy Silverado, GMC Sierra, Chevrolet Suburban, and GMC Yukon. There are two air filters listed which are standard and heavy duty. I purchased both and they look exactly the same except for a prefilter on the heavy duty version. Standard...
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    The main reason I change oil at 3000 miles...sludge!

    You can go ahead and search on Google and Youtube to learn about sludge if you are not knowledgable. In "severe" and "extreme" duty driving one challenge is sludge. Sludge is the main reason I change the oil every 3000 miles. Most notably I found the best oil to be one with the most...
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    NAPA Fleet Pads? Dust?

    On the NAPA website it says they are ceramic...how are they at dusting?
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    Quaker State 5W30 High Mileage deal at Walmart

    Just wanted to point this out. After looking at the formulas I feel Quaker State High Mileage is more robust then Quaker State Full Synthetic...more moly and more detergents. More robust then SuperTech and other oils. Not quite as robust as the Valvoline line. If you are out for very good...
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    Conclusions on Ecoboost Engine Oil - Gas Turbo Direct Injection

    I have tested a lot of different API SP oils from the Walmart shelf and came to the conclusion that any API SP oil will have excellent iron wear results. Much better iron wear results then what I saw in API SN and API SN+ oils. However, the constant issue seemed to be fuel dilution and how will...
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    Should I flush out the Dexcool?

    I am in the livery business and own multiple vehicles. I usually buy Lincoln and Ford but am being forced back into General Motors. Back years ago I had Suburbans and there were two things which I took note of. #1. The coolant bottle after 2 years leaked and looked like it went through an acid...
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    Hellwig bushings vs Moog Thermoplastic bushings vs Energy Suspension polyurethane

    I installed Hellwig sway bars and could not have been happier except for a clunk on the front bar. So then I researched the issue and the Hellwig bracket/bushing combination was faulty so then I turned to Energy Suspension and wow! What a difference! It was like my Navigator turned into a...
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    Ford 3.5L V6 Ecoboost oil filter Wix XP 57502XP vs Motorcraft FL-500-S vs Protec PXL57502 (all made by Wix/Purolator)

    Ford 3.5L V6 Ecoboost oil filter Wix XP 57502XP vs Motorcraft FL-500-S vs Protec PXL57502 (all made by Wix/Purolator) I performed a visual observation on these three filters. I dont have the tools to saw them open. All are made in the USA. The exterior cans appear the same. The Motorcraft...
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    Motorcraft FL-2062-A vs ProTec (Wix Filters) PXL10050 oil filter

    I bought 2 oil filters from RockAuto which are the Motorcraft FL-2062-A and the Protec PXL10050. Both are made by Wix in a Brazil production plant. I did a visual inspection only. Both appear to be the same filter. No further testing was done beyond a visual inspection. Therefore no conclusions...
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    2023 Lincoln Navigator L, Ford 3.5L Ecoboost, SuperTech 5W30 High Mileage API SP, 3193 miles on oil, 11880 miles on Engine

    Vehicle: 2023 Lincoln Navigator L Engine: 3.5 Liter Ecoboost High Output Similiar vehicles: Ford F150, Ford F150 Raptor, Ford Expedition Miles on oil: 3193 Miles on engine: 11880 Oil: Supertech 5W30 High Mileage in blue bottle API SP Style of driving: Used for livery/limousine work in and...
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    The Blackstone Labs Newsletter quietly scrubbed from the internet...

    This is a blast from the past! In August 2017 Blackstone Labs published a newsletter of averages for a selected bunch of oils for the GM 5.3 liter V8 and the Subaru 2.5 liter turbo. Confirming what many Subaru enthusiasts knew at the time was Rotella T6 5W40 simply outperformed all of the...
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    For the first time I am pouring Mobil 1 into my engine

    I know there are die hard fans for Mobil 1 and they have their reasons. I thought I might be open minded and finally pour it into the engine to see how it stacks against Pennzoil Ultra Platinum. I found in Walmart the "Extended Peformance" version with the almighty triple action plus formula...
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    SuperTech Advanced vs High Mileage vs Full Synthetic

    I finally got in all the results for samples of SuperTech Advanced, Full Synthetic and High Mileage. Engine is the high output 440 horsepower 3.5L V6 Ecoboost. I have also included results of Pennzoil Ultra Platinum 5W30 and Quaker State Euro 5W40 just to compare against SuperTech. Pennzoil next...
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    The YouTube Ford Tech Makuloco makes the case for a 3000 mile oil change on the Ford.Ecoboost

    I have been driving Ecoboost engines since 2018 and you learn fast this is an engine that loves fresh oil. I didnt need a Youtube video or an engine teardown to figure this out. This is a great video with engine teardown. Currently I do 3000 mile changes on mine.
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