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Description
Tillett B3.5 Race Car Seat in Black GRPThe B3. 5 seat weighs only 2. 1kg and has been made to allow fitment into some of the narrowest vehicles around. It holds the driver in a comfortable inclined racing position. The seat is derived from the B4 and features the same interior seating surface without the B4's backframe. The belt holes have been optimized to enable the use of a Hans device and allow a full racing harness to be used (5 or 6 point harnesses are recommended on an inclined
The B3.5 seat weighs only 2.1kg and has been made to allow fitment into some of the narrowest vehicles around. It holds the driver in a comfortable inclined racing position. The seat is derived from the B4 and features the same interior seating surface without the B4's backframe.The belt holes have been optimized to enable the use of a Hans device and allow a full racing harness to be used (5 or 6 point harnesses are recommended on an inclined seat).
The seat is supplied with a removable Dinamica ® suede covered headrest pad as standard and can also be supplied with matching back and cushion panels at extra cost.
The B3.5 is a thin flexible shell. To install this seat, it needs support with a framework or from bulkheads and roll bars. The recommended mounting points are shown below and Tillett suggests using their special fittings to attach to your fixing points. At least one fixing point must be at headrest level under the pad and two high up under the arms. Tillett also suggests creating two mounting points on the side at chest level.
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4.9 ★★★★★
Based on 27 reviews
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Product Reviews
★★★★★ 5
Top-tier engine protection that runs quiet and smooth
Size: 5 Quarts
I’ve used Castrol EDGE in a couple of our vehicles and always come back to it for consistent performance. It extends the time between oil changes and holds up well under both daily driving and highway mileage. We don't "extend the time" though. It's changed, on the dot, every time. The consistency and quality of the oil's condition at change, though, is easily able to be seen that it would go for much longer.
Engine runs quieter, and I’ve noticed better fuel efficiency over time compared to conventional oil. Whether that's how attentively I drive and watch the mileage meter on the dash or the oil - is up for debate ;)
It doesn’t burn off as quickly either, which is great if you’re keeping an eye on long-term engine health.
The bottle design pours cleanly with a smart spout, which saves unnecessary messes in the garage.
Pros:
Strong wear protection and long-lasting
Improves engine quietness
Easy-pour design
Tip:
Use it with a high-quality oil filter for maximum benefit don’t skimp on either part and you'll be golden.
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Reviewed in the United States on June 26, 2025
★★★★★ 5
Excellent choice for long oil change intervals.
Size: 1 Quart, Pack of 6
I'm a former dealership mechanic and for years I used whatever we had in the bulk tank which was usually Valvoline conventional. My last job was at a German car dealership. Castrol was the oil recommended by the German manufacturers and that's when I started using Castrol. In my experience Castrol is an excellent oil. My 2014 Ford just rolled over 242,000 miles and even with factory 10,000 mile oil change intervals, from what I can see through the oil fill the top end of the engine is still clean. I've never had to remove the valve cover. It's using about a quart between oil 10,000 mile oil changes which is great because when it was new it used about a 1/2 quart between changes.
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Reviewed in the United States on January 28, 2026
★★★★★ 5
Bueno
Size: 5 Quarts
Bueno
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Reviewed in the United States on June 3, 2026
★★★★★ 5
switched from Mobil 1
Size: 5 Quarts
always used Mobil 1, my 2003 accord v6 always burned a little bit of oil, switched to this and it barely burns any at all now.
will continue to use this from now on.
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Reviewed in the United States on April 27, 2026
★★★★★ 4
ITS GOOD OIL
Size: 5 Quarts
OVERALL NOT BAD BUT USING IT TO SEASON A CAST IRON WILL CREATE A BIT TOO DARK OF A SHEEN. WISH THE MANUFACTURER MENTIONED THAT
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Reviewed in the United States on April 8, 2025