North American Turbocoupe Organization



Oil Questions
DaleLeo Offline
Junior Member
#1
Hi

Getting new TC w 40K miles.  I have no idea about oil used in the car previously.  What oil would you recommend, natural or synthetic?  Weight? Any issues from changing from (presumably) natural to synthetic?

Thank you!
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Kuch Offline
Senior Member
#2
Dale,
I have been a Castrol guy since the early 90's but have recently switched over to Quaker State 5w-30 "Full Synthetic" for my 88 TC. It has been tested to provide extremely high wear protection as well as thermal breakdown resistance, which is a good thing in turbos. You can read about the independent testing of multiple different oils here, https://540ratblog.wordpress.com/2013/06...t-ranking/ , find your favorite and see how it compares, but for $22 at Wal-Mart, I 'm going with the Quaker State in all of my vehicles. Also, use a good oil filter such as a Motorcraft, Purolator, or a WIX. There have been some concerns in the past of synthetic maybe leaking more in a vehicle due to its more slippery nature, but I have switched over to synthetic in my old vehicles as well and have seen no increase in leaks.
1988 Turbo Coupe, Black/Black, 5 Speed, Moonroof,  T3/T4 50 trim, ported E6, 255LPH, Kirban, 3" DP dual 2.5" w Hooker Maxflows, MGW shifter, K&N, Gillis valve, RR cam, Koni's
1964 Ford Galaxie 500XL, 390 6V, Big Solid cam, Headers,3.89's, 4 Speed, Vast and fast
1960 Ford Starliner, 292 Y Block, 312 4bbl intake, headers, 3 Speed, slow and low
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Jeff K Offline
Administrator
#3
I have been running Mobil 1 in all our cars since it came out circa 1978. Zero issues with oil leaks / oil seal leaks / zero engine issues ever in any of the cars.
Jeff Korn

88 Turbo Coupe: Intake and exhaust mods, T3 turbo at 24 psi, forced air IC, water injection, BPV, Ranger cam, subframes, etc., etc.
86 Tbird 5.0 (original owner): intake, exhaust, valvetrain mods, 100 HP N2O, ignition, gears, suspension, etc., etc.
05 Taurus SEL Duratec daily driver
04 Taurus Duratec (wifes car)
02 Pontiac Grand Prix GT
95 Taurus GL Vulcan winter beater
67 Honda 450 Super Sport - completely customized
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88turbomajor Offline
Junior Member
#4
(08-30-2021, 02:53 PM)Jeff K Wrote: I have been running Mobil 1 in all our cars since it came out circa 1978. Zero issues with oil leaks / oil seal leaks / zero engine issues ever in any of the cars.

What weight oil?
1988 Turbo Coupe, Blue on Blue with Cloth Interior, Moon Roof, A/T
Monroe Shocks all-around, NATO inspired cold air induction, Gillis Boost Controller
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DaleLeo Offline
Junior Member
#5
(08-30-2021, 10:52 AM)Kuch Wrote: Dale,
I have been a Castrol guy since the early 90's but have recently switched over to Quaker State 5w-30 "Full Synthetic" for my 88 TC. It has been tested to provide extremely high wear protection as well as thermal breakdown resistance, which is a good thing in turbos. You can read about the independent testing of multiple different oils here, https://540ratblog.wordpress.com/2013/06...t-ranking/  , find your favorite and see how it compares, but for $22 at Wal-Mart, I 'm going with the Quaker State in all of my vehicles. Also, use a good oil filter such as a Motorcraft, Purolator, or a WIX. There have been some concerns in the past of synthetic maybe leaking more in a vehicle due to its more slippery nature, but I have switched over to synthetic in my old vehicles as well and have seen no increase in leaks.

Kuch, thanks!  BTW we have similar tastes in cars.  I have a '63 Galaxie (406 G code) and would love to have a Starliner...
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DaleLeo Offline
Junior Member
#6
(08-30-2021, 02:53 PM)Jeff K Wrote: I have been running Mobil 1 in all our cars since it came out circa 1978. Zero issues with oil leaks / oil seal leaks / zero engine issues ever in any of the cars.

Jeff, thanks!
Reply

Kuch Offline
Senior Member
#7
(08-30-2021, 05:44 PM)DaleLeo Wrote:
(08-30-2021, 10:52 AM)Kuch Wrote: Dale,
I have been a Castrol guy since the early 90's but have recently switched over to Quaker State 5w-30 "Full Synthetic" for my 88 TC. It has been tested to provide extremely high wear protection as well as thermal breakdown resistance, which is a good thing in turbos. You can read about the independent testing of multiple different oils here, https://540ratblog.wordpress.com/2013/06...t-ranking/  , find your favorite and see how it compares, but for $22 at Wal-Mart, I 'm going with the Quaker State in all of my vehicles. Also, use a good oil filter such as a Motorcraft, Purolator, or a WIX. There have been some concerns in the past of synthetic maybe leaking more in a vehicle due to its more slippery nature, but I have switched over to synthetic in my old vehicles as well and have seen no increase in leaks.

Kuch, thanks!  BTW we have similar tastes in cars.  I have a '63 Galaxie (406 G code) and would love to have a Starliner...

nice a 406 63! is it a boxtop? Always like the boxtop 63's and the big early 60's Galaxies in general.
1988 Turbo Coupe, Black/Black, 5 Speed, Moonroof,  T3/T4 50 trim, ported E6, 255LPH, Kirban, 3" DP dual 2.5" w Hooker Maxflows, MGW shifter, K&N, Gillis valve, RR cam, Koni's
1964 Ford Galaxie 500XL, 390 6V, Big Solid cam, Headers,3.89's, 4 Speed, Vast and fast
1960 Ford Starliner, 292 Y Block, 312 4bbl intake, headers, 3 Speed, slow and low
Reply

DaleLeo Offline
Junior Member
#8
(08-31-2021, 10:36 AM)Kuch Wrote:
(08-30-2021, 05:44 PM)DaleLeo Wrote:
(08-30-2021, 10:52 AM)Kuch Wrote: Dale,
I have been a Castrol guy since the early 90's but have recently switched over to Quaker State 5w-30 "Full Synthetic" for my 88 TC. It has been tested to provide extremely high wear protection as well as thermal breakdown resistance, which is a good thing in turbos. You can read about the independent testing of multiple different oils here, https://540ratblog.wordpress.com/2013/06...t-ranking/  , find your favorite and see how it compares, but for $22 at Wal-Mart, I 'm going with the Quaker State in all of my vehicles. Also, use a good oil filter such as a Motorcraft, Purolator, or a WIX. There have been some concerns in the past of synthetic maybe leaking more in a vehicle due to its more slippery nature, but I have switched over to synthetic in my old vehicles as well and have seen no increase in leaks.

Kuch, thanks!  BTW we have similar tastes in cars.  I have a '63 Galaxie (406 G code) and would love to have a Starliner...

nice a 406 63! is it a boxtop? Always like the boxtop 63's and the big early 60's Galaxies in general.

It's a comvertible
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teal95 Offline
Senior Member
#9
I've bee using 0w30.

steve
'83 & '84 GT turbo EEC-Tuner
'85.5 & '86 SVO twEECer
2x '87 & '88 TC QuarterHorse
'93 LX 5.0 notch Moates chips
3x '95 & '96 GT
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84TBirdTurbo42 Offline
Senior Member
#10
10w30 and nothing lower. These motors were made in a time when tolerances were looser then they are today. Putting 5w, or 0w will burn faster then the money that your spending on it.
Chris Perry
1984 Ford Thunderbird Turbo Coupe. Dead, NY rot killed her
1986 Thunderbird shell, swapping parts from the 84.
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