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I run Fuchs Titan Truck 15w40 in my Cummins 6BT, engine was rebuilt about 50,000ks ago, seems to go alright with this oil
I have a 2012 gmc terrain 2.4l currently at 202k. I’ve used Lucas oil and restore and protect Valvoline oil the last 50k. Still runs like a gem with 177-182-179-175 compression cylinders 1-4. Used to be 155-149-144-168 before I started using both these oils
I exclusively have used Lucas oil for my sportster motor for 5 years. The bottle looks cool, that's it. Full synthetic oil, no frills, cheap, and easy to get.
I can whole heartedly recommend Fuchs Silkolene oils, it actually quieted down my sv compared to Motul.
I like the Lucas ones personally.
Am bagat si eu Fuchs intr-un 3.0tdi si in romania 1L e 60 de lei cam asa dar pe [Ebay.de](http://Ebay.de) e 35 de lei litrul la fel si Aral, ciudat de ieftin. Motorul merge cam cu 10'C mai putin la ulri fata de castrol(se ducea si la 119'C pe autostrada)
4.5 L is the Ideal for Mazda 6 2.5 non turbo, I'm from the same country as you. I'm using fuchs titan 5w30 for two years and I recommend you do the same, I noticed quieter engine.
Lucas OS works great. It's some amazing stuff, BUT. Do not go over your oil change intervals. Once the Lucas additive starts breaking down it turns to a nasty varnish. Went 7k using synthetic amsoil z-rod and Lucas OS, on a new rebuilt 4.0l. Lost a lifter and ate up the cam lobe.
That looks like you dropped a valve. Yes Lucy’s oil will help. It will lubricate the chamber so you can take out all the pieces.
Eu stau pe fuchs la 1.5 dci cu norma 0720. Nici nu se compara cu motul, pe mine m-a lasat rece
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If choosing engine oil across many manufacturers, check the part ranking. If your choice is down to two brands, the PartReview part comparisons help.
We compare engine oil across these categories:
In March 2026 on PartReview, engine oil FUCHS were overall better than Lucas.
Engine oil FUCHS and Lucas were equally popular according to data in March 2026.
By vote balance, engine oil FUCHS surpassed Lucas:
By number of reviews, engine oil Lucas surpassed FUCHS:
In March 2026, according to PartReview, engine oil FUCHS and Lucas have not taken top places in car-specific ratings. You can help by adding your review about these manufacturers.
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For example, comparisons of engine oil FUCHS with: Mobil, Castrol, LIQUI MOLY, MOTUL, Shell, AMSOIL, VALVOLINE, PENNZOIL, RED LINE, OEM Toyota.
Also available: comparisons of engine oil Lucas with: Mobil, Castrol, LIQUI MOLY, MOTUL, Shell, AMSOIL, VALVOLINE, PENNZOIL, RED LINE, OEM Toyota.
You can also see who is better among other engine oil manufacturers: Mobil or Castrol, Mobil or LIQUI MOLY, Mobil or MOTUL, Mobil or Shell, LIQUI MOLY or Castrol.