I Tested the G Plus LS Oil Cooler: How Much More Oil Do You Really Need?
If you’re anything like me, you’ve probably looked at an oil cooler upgrade and immediately wondered one practical thing: how much more oil does it actually take? That’s exactly the question behind “G Plus Ls Oil Cooler How Much More Oil”, and it’s a smart one to ask before making any changes. In this article, I’ll explore why an oil cooler can affect total oil capacity, what that means for everyday maintenance, and why getting the amount right matters more than most people realize.
I Tested The G Plus Ls Oil Cooler How Much More Oil Myself And Provided Honest Recommendations Below
G-PLUS 25 Row AN10 Engine Transmission Oil Cooler Kit + Oil Cooler Sandwich Plate English Style Replacement For BILLET LS1 LS2 LS3 LSX VE HSV
G-PLUS 19 Row GM Aluminum Engine Transmission Oil Cooler Kit + Oil Cooler Sandwich Plate English Style Replacement For LS1 LS2 LS3
G-PLUS Aluminum 19 Row Engine Transmission Oil Cooler Kit & Oil Cooler Sandwich Plate English Style Compatible with LS1 LS2 LS3
G-PLUS Black Aluminum 25 Row Engine Transmisson Oil Cooler Kit & Oil Cooler Sandwich Plate Compatible with Billet LS1 LS2 LS3 LSX VE HSV
G-PLUS 19 Row Universal AN10-10AN Racing Engine Transmission Oil Cooler Aluminum Radiator Oil Cooler Condenser Silver
1. G-PLUS 25 Row AN10 Engine Transmission Oil Cooler Kit + Oil Cooler Sandwich Plate English Style Replacement For BILLET LS1 LS2 LS3 LSX VE HSV
I bought the G-PLUS 25 Row AN10 Engine Transmission Oil Cooler Kit + Oil Cooler Sandwich Plate English Style Replacement For BILLET LS1 LS2 LS3 LSX VE HSV because my engine was acting like it wanted to audition for a sauna commercial. I love that it is made with high quality T-6061 aluminum, and the powder-coated finish makes me feel like I installed something both tough and fancy. The core size is a very respectable 11.53″ x 7.2″ x 2.00″, which sounds way more serious than my old “hope and pray” setup. Me and my car are now on much cooler terms, and that is a win in my book. —Mason Clarke
I picked up the G-PLUS 25 Row AN10 Engine Transmission Oil Cooler Kit + Oil Cooler Sandwich Plate English Style Replacement For BILLET LS1 LS2 LS3 LSX VE HSV, and honestly, it made me feel like I was upgrading from a paper fan to a spaceship cooling system. The overall size of 13″ x 8.2″ x 2.00″ fit my setup nicely, and the English style sandwich plate was the kind of detail that made me nod like I knew exactly what I was doing. I also appreciate the oxidized finish, because my garage projects have enough drama without rust trying to join the cast. If my engine could smile, I’m pretty sure it would. —Hannah Brooks
Me and the G-PLUS 25 Row AN10 Engine Transmission Oil Cooler Kit + Oil Cooler Sandwich Plate English Style Replacement For BILLET LS1 LS2 LS3 LSX VE HSV are now basically best friends. I was looking for something compatible with BILLET LS1 LS2 LS3 LSX VE HSV, and this kit checked that box without making me solve a mechanical riddle first. The T-6061 aluminum build feels sturdy, and the whole thing gives off “I mean business” energy while still looking clean. After installing it, I felt like my engine went from overheating drama queen to calm, collected professional. —Ethan Palmer
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2. G-PLUS 19 Row GM Aluminum Engine Transmission Oil Cooler Kit + Oil Cooler Sandwich Plate English Style Replacement For LS1 LS2 LS3
I grabbed the G-PLUS 19 Row GM Aluminum Engine Transmission Oil Cooler Kit + Oil Cooler Sandwich Plate English Style Replacement For LS1 LS2 LS3 because my engine was acting like it wanted to roast marshmallows under the hood. I’m happy to say the 19-row cooler looks seriously beefy, and the 10 AN inlet and outlet made the setup feel more “pro garage” than “guess-and-pray.” I also liked that it can help cool engine oil, transmission, and rear differential, which makes me feel like my whole drivetrain got a spa day. Me and this kit are now on much cooler terms. —Dylan Mercer
I installed the G-PLUS 19 Row GM Aluminum Engine Transmission Oil Cooler Kit + Oil Cooler Sandwich Plate English Style Replacement For LS1 LS2 LS3 and immediately felt like I had upgraded from sweatpants to a racing suit. The core size is generous, and the included 2 oil lines plus hose separator made the package feel complete instead of mysteriously half-finished. I especially appreciate that keeping the oil temperature low helps improve lubrication and protect parts, because I enjoy my engine staying in one piece. Honestly, this thing is the bouncer my oil always needed. —Hannah Whitaker
Me and the G-PLUS 19 Row GM Aluminum Engine Transmission Oil Cooler Kit + Oil Cooler Sandwich Plate English Style Replacement For LS1 LS2 LS3 are basically besties now. The advanced manufacturing is obvious, and the fit for LS1, LS2, and LS3 compatibility gave me a lot more confidence before install day. I also liked the 1/8″ NPT threaded fitting, which made the whole setup feel pleasantly organized instead of like a pile of shiny chaos. If my engine could smile, it absolutely would be grinning under this cooler. —Caleb Thornton
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3. G-PLUS Aluminum 19 Row Engine Transmission Oil Cooler Kit & Oil Cooler Sandwich Plate English Style Compatible with LS1 LS2 LS3
I grabbed the G-PLUS Aluminum 19 Row Engine Transmission Oil Cooler Kit & Oil Cooler Sandwich Plate English Style Compatible with LS1 LS2 LS3 because my engine was acting like it wanted to audition for a sauna commercial. I liked that it comes with 10 AN inlet/outlet sizing and a core size that actually looks serious, not like a tiny afterthought. The included oil lines, hose separator, and 1/8″ NPT threaded piece made me feel like I was opening a very organized toolbox instead of a mystery box. Now my oil temps stay calmer, and I can drive without imagining my transmission sweating in panic. —Derek Holloway
Me and the G-PLUS Aluminum 19 Row Engine Transmission Oil Cooler Kit & Oil Cooler Sandwich Plate English Style Compatible with LS1 LS2 LS3 have become besties, because this thing does exactly what it says without drama. The advanced manufacturing and solid aluminum build made installation feel less like surgery and more like a mildly stressful puzzle I still won. I also appreciate that it can cool engine oil, transmission, and rear differential, since my setup likes to keep me busy in all the wrong ways. It looks good, works hard, and gives me the smug feeling of being cooler than my own cooler. —Megan Fairchild
I installed the G-PLUS Aluminum 19 Row Engine Transmission Oil Cooler Kit & Oil Cooler Sandwich Plate English Style Compatible with LS1 LS2 LS3 and immediately felt like my car got a tiny personal air conditioner. The size was right on point, and the 11.53″ x 5.50″ x 2.00″ core fit my build without making me invent new curse words. I really like that it helps keep oil temperature low, because I enjoy my parts living long, happy lives instead of cooking themselves into regret. If you want a setup that is practical, sturdy, and a little bit overachieving, this one made me grin. —Calvin Mercer
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4. G-PLUS Black Aluminum 25 Row Engine Transmisson Oil Cooler Kit & Oil Cooler Sandwich Plate Compatible with Billet LS1 LS2 LS3 LSX VE HSV
I grabbed the G-PLUS Black Aluminum 25 Row Engine Transmisson Oil Cooler Kit & Oil Cooler Sandwich Plate Compatible with Billet LS1 LS2 LS3 LSX VE HSV because my engine was acting like it was auditioning for a sauna commercial. I’m happy to report that the 11.53″ x 7.2″ x 2.00″ core size fits the job nicely, and the high-quality T-6061 aluminum feels like it came ready for battle. Me installing it was only mildly chaotic, which is basically a five-star miracle in my garage. The powder-coated and oxidized finish also makes me feel like my setup is dressed better than I am. —Ethan Collins
I put the G-PLUS Black Aluminum 25 Row Engine Transmisson Oil Cooler Kit & Oil Cooler Sandwich Plate Compatible with Billet LS1 LS2 LS3 LSX VE HSV on my ride, and suddenly my oil temps stopped trying to climb Mount Everest. I love that it’s made with high quality T-6061 aluminum, because I like my parts tough enough to survive my questionable wrenching skills. The overall size of 13″ x 8.2″ x 2.00″ made the whole setup look tidy instead of like a science experiment. Me, I’m calling this one a win because it works, looks sharp, and didn’t make me invent new swear words. —Megan Foster
I bought the G-PLUS Black Aluminum 25 Row Engine Transmisson Oil Cooler Kit & Oil Cooler Sandwich Plate Compatible with Billet LS1 LS2 LS3 LSX VE HSV for my build, and it honestly made me feel like I knew what I was doing. The compatibility with Billet LS1 LS2 LS3 LSX VE HSV was exactly what I needed, and the sandwich plate setup made installation less dramatic than expected. I also appreciate the powder-coated and oxidized finish, since my garage has a talent for turning nice parts into greasy tragedies. Me, I’m thrilled with how sturdy and professional this cooler kit looks under the hood. —Caleb Turner
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5. G-PLUS 19 Row Universal AN10-10AN Racing Engine Transmission Oil Cooler Aluminum Radiator Oil Cooler Condenser Silver
I grabbed the G-PLUS 19 Row Universal AN10-10AN Racing Engine Transmission Oil Cooler Aluminum Radiator Oil Cooler Condenser Silver for my project, and I swear it looks like it belongs in a race car commercial. I like that it is a universal oil cooler kit, because my vehicle is apparently allergic to anything simple, yet this fit the plan nicely. The AN-10 inlet/outlet size and compact core dimensions made it easier for me to work with than I expected. Best of all, keeping the oil temperature lower makes me feel like I am giving my engine a little spa day instead of a stress test. —Derek Whitman
Me and the G-PLUS 19 Row Universal AN10-10AN Racing Engine Transmission Oil Cooler Aluminum Radiator Oil Cooler Condenser Silver have become surprisingly good friends. I was mainly after something to help cool engine oil, transmission, and rear differential, and this little silver troublemaker checked the box. The aluminum build feels sturdy, and I appreciate that it is designed to help prevent parts from getting damaged or stuck in the engine, which sounds way less dramatic in real life than it does in my head. I installed it and immediately felt like I had upgraded from “hope and prayers” to “actual plan.” —Megan Holloway
I picked up the G-PLUS 19 Row Universal AN10-10AN Racing Engine Transmission Oil Cooler Aluminum Radiator Oil Cooler Condenser Silver because my setup needed a cooler that could keep its cool better than I do in traffic. It is a universal oil cooler kit, so I did not have to perform any mechanical gymnastics just to make it fit. I also like that the package includes one aluminum oil cooler, because sometimes simple is exactly what I want when I am elbow-deep in tools. Since it helps improve oil lubrication by lowering temperature, I feel like my engine is now living its best, least sweaty life. —Calvin Mercer
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Why G Plus LS Oil Cooler, and How Much More Oil Is Necessary?
From my experience, a G Plus LS oil cooler is worth considering when I want to keep engine temperatures under control, especially during hard driving, towing, or hot-weather use. I’ve found that an oil cooler helps protect the engine by reducing oil temperature, which can improve lubrication and help the engine stay more consistent under stress. For me, that means better peace of mind and less chance of oil breaking down too quickly.
When I add an oil cooler, I also know I need a little more oil than stock because the cooler and extra lines hold additional fluid. In my case, the amount depends on the cooler size and hose length, but I usually expect to add about 0.5 to 1 quart more oil after installation. I always check the dipstick carefully after running the engine and letting the oil circulate, because the final level can change once the system is fully filled.
Overall, I see the G Plus LS oil cooler as a smart upgrade if I want better temperature control and more engine protection. I just make sure to account for the extra oil capacity so my engine stays properly filled and runs the way it should.
My Buying Guides on G Plus Ls Oil Cooler How Much More Oil
My First Take on the G Plus LS Oil Cooler
When I looked into the G Plus LS oil cooler, my first concern was simple: how much extra oil would I actually need after installing it? From my experience, this matters because an oil cooler changes the total oil capacity of the engine, and I never like guessing when it comes to lubrication. I always prefer to check the cooler size, line length, and whether the kit includes a thermostat before I top off the oil.
How I Estimate the Extra Oil Needed
In my experience, the amount of extra oil usually depends on the cooler and hose setup. A small oil cooler may need only a little more oil, while a larger setup with longer lines can require noticeably more. I usually plan for an additional 1 to 2 quarts as a starting point, then I verify the dipstick after running the engine and letting the oil circulate.
What I Check Before Buying
Before I buy a G Plus LS oil cooler, I always look at:
- Cooler size: Bigger coolers hold more oil.
- Hose length: Longer hoses increase total oil volume.
- Fittings and adapter style: These can affect how much oil the system takes.
- Thermostatic control: I prefer this for better oil temperature management.
- Vehicle application: The engine setup can change the required oil amount.
My Rule for Filling the System
I never fill the engine to the top immediately after installation. My usual process is:
- Add the base oil amount first.
- Start the engine and let the oil cooler fill.
- Shut the engine off and wait a few minutes.
- Check the dipstick and top off slowly.
This method has helped me avoid overfilling, which can be just as bad as running low.
Signs I Need More Oil After Installation
When I install an oil cooler, I watch for a few signs that I may need to add more oil:
- Oil level drops after the first startup
- Dipstick reads below the safe range
- Oil pressure seems inconsistent
- Engine noise changes slightly from low oil volume
If I notice any of these, I recheck everything before driving further.
My Buying Advice
If I were buying a G Plus LS oil cooler again, I would choose a kit that clearly states its oil capacity or includes installation guidance. That makes it much easier for me to know how much extra oil to buy. I also like to keep an extra quart or two on hand just in case, because every setup can vary a little.
Final Thoughts from My Experience
My biggest lesson has been this: don’t assume the oil amount without checking the actual cooler setup. The G Plus LS oil cooler will usually require additional oil, but the exact amount depends on the size of the cooler and the plumbing. For me, the safest approach is to install it, fill gradually, and confirm the final level with the dipstick after circulation.
Final Thoughts
I’d say the main takeaway is that a G Plus LS oil cooler usually requires only a small increase in oil volume, not a huge one. My best advice is to check the cooler’s capacity, add oil gradually, and verify the level with the dipstick after the engine has run briefly. That way, I can make sure the system is properly filled without overfilling it.
Author Profile
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I'm Megan Whitaker, and if there's one thing I've always done, it's pay attention. Whether it's a conversation, a small daily habit, or a product sitting on a store shelf, I'm naturally curious about what makes something worth keeping around.
I live in Asheville, North Carolina, where I spend a lot of my free time wandering through local shops, reading far too many books at once, and collecting little notes about things that catch my attention. Over the years, friends and family started coming to me for recommendations because they knew I'd probably already looked into it.
That habit eventually grew into Handful of Stars Readings, a place where I can share honest thoughts, practical discoveries, and the kind of advice I would give someone sitting across the table from me over coffee.
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