Below you will find the best synthetic oil for a 1999 Lexus GS300. Maximize your vehicle's potential with 100% full synthetic oil that is made in the USA! For more than the past 50 years, AMSOIL has perfected the art of maximizing efficiency and engine life. The advanced synthetic formulas deliver superior protection from heat, friction, and wear, keeping engines as good as new for miles. Upgrade to AMSOIL today and experience better performance, reliability, and reduced oil consumption. Click add to cart for more details. Sign up as a preferred customer and get discounts and more! The oil type, capacity and oil filter (if available) are listed below and verified for accuracy. Upgrade now!
Recommended oil for my 1999 Gs300
| Product Name | Product Description | Capacities | Product |
|---|---|---|---|
| Signature Series 5W-30 Synthetic Motor Oil | Save time and money and costly repairs at the auto shop! Amsoil has your back! Bullet proof your Gs300's engine! | With filter 5.7 quarts After refill check oil level. |
ASLQT-EA
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| XL 5W-30 Synthetic Motor Oil | Protect your Gs300 with the best synthetic oil! Amsoil backs up all claims with proof! Support American Oil! | With filter 5.7 quarts After refill check oil level. |
XLFQT-EA
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| OE 5W-30 Synthetic Motor Oil | AMSOIL OE Synthetic Motor Oil is specially made for the extended oil change intervals recommended for your 1999 Lexus Gs300 3.0L. It has advanced synthetic technology that resists chemical breakdown for maximum wear protection for your vehicle which is well beyond the traditional 3,000-mile oil change interval. | With filter 5.7 quarts After refill check oil level. |
OEFQT-EA
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Recommended oil filters for my 1999 Gs300
| Product Name | Product Description | Product |
|---|---|---|
| AMSOIL Ea Oil Filters | Awesome filter for your 1999 Lexus Gs300 which is recommended for 15,000 miles/one year, whichever comes first, in normal or severe driving conditions. |
EA15K51-EA
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| WIX Oil Filter | Wix oil filters for your 1999 Lexus Gs300 have extended OEM recommendations which match the drain intervals of AMSOIL XL synthetic motor oil which is 12k or 1 year, whichever is first. |
51348-EA
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Recommended transmission fluids for my 1999 Gs300
| Product Name | Note | Capacities | Product Description | Product |
|---|---|---|---|---|
| Signature Series Multi-Vehicle Synthetic Automatic Transmission Fluid | Automatic Transmission Fluid |
2 quarts Initial Fill 5 speed A650E Total Fill 8.3 quarts | Amsoil's Signature Series Multi-Vehicle Synthetic automatic transmission fluid is made to blow the doors off any regular or conventional ATF fluids on the market and our oil surpasses the performance needs of most vehicles. Protect your transmission and avoid costly repairs. This fluid has an advanced formula to give awesome top-notch protection under harsh operating conditions. Transmission repairs are expensive so protect your vehicle with this great fluid! |
ATFPK-EA
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| OE Multi-Vehicle Synthetic Automatic Transmission Fluid | Automatic Transmission Fluid |
2 quarts Initial Fill 5 speed A650E Total Fill 8.3 quarts | Outsanding protection and resists varnish! Change interval based on your Gs300's recommendation. |
OTFQT-EA
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Differential for my Lexus Gs300
| Product Name | Note | Capacities | Product Description | Product |
|---|---|---|---|---|
| SEVERE GEAR® 80W-90 | Rear 2.7 pints | This lube is made to exceed the requirements of equipment and all vehicles that require SAE 80W-90 viscosity. It is made with synthetic base oils and top additives without adding any wax. Amsoil Severe Gear is solid against thermal breakdown. Will give you awesome protection for bearings and gears and tough against heat which will help extend the life of your equipment and avoid costly repairs. Made in the U.S.A. |
AGLPK-EA
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| SEVERE GEAR® 75W-90 | Rear 2.7 pints | This special formula is made for harsh operating conditions that pick-up trucks endure. Also top-notch protection for SUVs, heavy equipment, and other heavy-duty vehicles. Made in the USA. |
SVGPK-EA
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| SEVERE GEAR® 75W-110 | Rear 2.7 pints | This is a fantastic lubricant for towing trailers, heavy duty hauling, off road driving/4x4, commercial applications, and for race enthusiasts. This severe gear lube will protect bearings, gears from friction and exceeds performance of any regular gear oil out there! Keep your truck or vehicle out of the shop and avoid costly repairs with this made in the USA lube. |
SVTPK-EA
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Recommended coolants for my Lexus Gs300
| Product Name | Product Description | Capacities | Product |
|---|---|---|---|
| Passenger Car & Light Truck Antifreeze & Coolant | maximum protection for your 1999 Lexus Gs300 under extreme temperatures and operating conditions! Lasts up to 150,000 miles or five years! (whichever comes first) | Initial fill 7.9 quarts |
ANTPC1G-EA
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| Low Toxicity Antifreeze and Engine Coolant | Lasts in your 1999 Lexus Gs300 for up to 150,000 miles or five years! (whichever comes first). Biodegradable! | Initial fill 7.9 quarts |
ANT1G-EA
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Drive more miles and have less wear and tear on your engine. Amsoil synthetic motor oil gives you peace of mind and less expenses! Great for cold weather also! Protect your motor with an Amsoil synthetic oil. Change your oil only once per year and save time/money. In addition to this, any mechanic should be happy to change your regular or conventional oil over to Amsoil if you take him the filter and quartz (capacity for your car or truck is listed on this page). If any mechanic declines to change the oil you bring to them, whether Amsoil or not, then it is time to find a new mechanic!
